Why We Decided to Have a Second Child: What I Think of MIL’s ‘Give Your First a Sibling’ Reason
Last Tuesday I was kneeling in scratchy cedar mulch at our neighborhood playground, one hand hovering an inch from my 4-year-old Lila’s scuffed sneaker as she inched across the monkey bars, when I remembered the reader email I’d skimmed while waiting for coffee that morning. My 16-month-old Jude was strapped to my back, drooling through the collar of my faded gray hoodie, and every 10 seconds he’d kick my ribs to remind me he wanted the cheddar goldfish stashed in my jacket pocket. The reader, Clara, wrote that she and her husband were solidly on the fence about a second kid. Her mother-in-law brought it up at every weekly Sunday dinner, with the same two lines: their firstborn would grow up lonely without a live-in playmate, and when Clara and her husband got old and sick, there’d be no one to split the work of caring for them. Clara wanted to know what made us decide to have our second, and whether I thought her MIL’s reason held up.
When Lila was 2, I would’ve told you we were one and done. I’d just gone back to work part-time after maternity leave, we’d just finished paying off our 2012 Honda Civic, and our 900-square-foot two-bedroom already felt tight with just the three of us. I liked our rhythm: weekend pancake breakfasts, one simple bedtime routine, the ability to toss one kid in the car and run to Target without packing a diaper bag the size of a suitcase. The tipping point wasn’t some grand moment of “our family isn’t complete.” It was a rainy Sunday at the local children’s museum. Lila latched onto another 2-year-old at the water table, and they poured cups of dyed blue water back and forth for 45 minutes, no adult input needed, cackling so hard they snort-laughed when one spilled on their sock. When the other girl’s mom called that they had to leave for a birthday party, Lila stood by the exit for 12 minutes, scanning every new family that walked in for another kid her size. No one came. She didn’t want to play at the water table with me or my husband after that; she just dragged her feet to the car and said it was boring.
We talked it over for three months after that. We ran the numbers over and over: full-time daycare for Jude would eat almost half my take-home pay for the first three years. We’d have to yank the guest bed out of the second bedroom and store it in the basement, put off replacing the clanking 15-year-old water heater for another year, beg my mom, who lives 10 minutes away, to add one more school pickup a week to her schedule. We didn’t decide to have Jude for Lila, not really. We decided because we wanted another baby. We liked the messy, loud work of parenting, we had just enough support and just enough money to make it work, and that afternoon at the museum just made us stop pushing “someday” off indefinitely. It was our call, for our family—not a gift for Lila, not a favor to our parents.
Which is why I side-eye the “give your first a live-in playmate” line, even on the days it feels true. Last Saturday, the two of them dragged every couch cushion onto the living room floor and turned it into a pirate ship for 40 straight minutes. Lila was captain, Jude was the shark that kept falling overboard, and I got to drink an entire mug of coffee while it was still hot. That’s the version MIL talks about, the one that makes it sound like you’re buying your first kid a permanent best friend.
Most days aren’t that. Half the time they’re screaming over the same yellow dump truck, even though we own two identical yellow dump trucks. Lila complains Jude knocks over her Magna-Tile castles before she can add the tower. Jude cries because she won’t let him hold her sparkly markers. Three weeks ago, halfway through meatloaf dinner, Lila looked up at me and said, very seriously, “Can we take Jude back to the baby store? I liked it better when it was just us.”
Our pediatrician and Lila’s preschool teacher both told me the same thing before Jude was born: siblings aren’t a replacement for peer friendship, and they’re certainly not a guaranteed friend for life. Only children don’t grow up inherently lonely; they build close friendships at daycare, school, soccer practice, the neighborhood playground, same as kids with siblings. Plenty of adult siblings barely speak, or live across the country and only see each other once every few years. You can’t have a second kid and check “social skills” off your parenting to-do list.
That said, there is one small, specific thing I didn’t expect, that I haven’t seen Lila get playing with adults or even casual friends. When I play with Lila, I always let her pick the game, always let her win, always bend the rules to keep her happy. Jude doesn’t. A couple months ago, they were playing doctor. Lila insisted she got to be the doctor every round, and Jude had to be the sick baby who just laid there and got a sticker. After three rounds, he grabbed the toy stethoscope and crawled off to chew on it in the corner by himself. Lila huffed and came to me to tattle, and I didn’t step in to fix it. I just wiped flour off my hands from making dinner and said, “He doesn’t want to be the baby again. What other job could he have?” Five minutes later, she’d negotiated a deal: he got to be the doctor first, and she’d be the sick mom who brought cookies for the office.
That’s the kind of compromise you can’t teach a kid out of a workbook. She had to notice someone else was bored, adjust what she wanted, and problem-solve to get the game started again. But that’s a side effect, not a reason to have a kid. It puts a weird, heavy burden on both children: the second baby is treated like a toy or a developmental tool for the first, instead of their own person who’ll have their own needs and tantrums and opinions.
The other half of Clara’s MIL’s argument—having someone to split elder care with—hits closer to home, because I’ve seen both sides. When my grandma had a stroke six years ago, my brother and I split the work automatically: I took the weekday overnight shifts at the rehab facility and handled all the insurance and Medicare phone calls, he installed grab bars in her bathroom and coordinated with the lawn care guy. I can’t imagine navigating that whole mess alone.
But my closest friend, Jess, is an only child, and she handled her mom’s breast cancer treatment two years ago mostly by herself. She says it was exhausting, but she also never once fought with a sibling about whether to move their mom to assisted living, who owed who money for missed work, or why one person wasn’t pulling their weight. I know three different pairs of siblings right now where one does 90% of the care work for an aging parent and the other barely answers texts. A sibling doesn’t guarantee you a built-in care partner any more than it guarantees you a built-in best friend.
It’s also such a strange gamble to base a huge, expensive, life-altering decision right now on a hypothetical that’s 40 or 50 years down the line. If you’re already stretching paychecks to cover rent and childcare for one, adding another baby doesn’t make your future care more secure—it makes your present more stressful, and puts more financial strain on the whole family. If that’s the main worry, there are concrete steps you can take right now that are way more reliable: look into long-term care insurance in your 30s, talk to a fee-only financial planner about savings for end-of-life care, build close mutual support with friends who live nearby, the kind of people who’ll bring you soup after surgery and drive you to doctor’s appointments. A lot of people build chosen family that shows up way better than blood does.
I get why MILs say this stuff, honestly. Most of them had kids in an era when a single blue-collar income could buy a house and support three kids, when extended family lived within 10 minutes and extra kids were just another pair of hands to help with chores. It’s what they knew, it’s what they assume will make their kids’ lives easier. It’s not usually pushy for pushiness’ sake. But it’s not a reason to build your family that way.
For what it’s worth, the small, practical checks we suggest to friends on the fence are way simpler than hashing out intergenerational opinions at Sunday dinner. If you’re worried your only kid is starved for peer time, sign them up for one weekly playgroup or recreational class, and stick with it for three months. A lot of the time, that regular, consistent peer interaction fills that gap just fine, no sibling required. If elder care is the big worry, spend one Saturday afternoon getting quotes for long-term care insurance and running the numbers with a low-cost financial planner, instead of adding a whole person to your family to solve a problem that might never look the way you think.
If you do decide to have a second, skip the “we got you a present!” framing when you tell your first. We told Lila straight: “We’re having a baby, and he’s going to cry a lot, and take a lot of mom and dad’s time, and sometimes you’re going to feel left out or mad, and that’s okay. We’ll always make time for you.” We still stick to 20 minutes of one-on-one time with her every single night, right after Jude goes to bed, no phones, no chores, whatever she wants to do, even if that’s reading the same Paw Patrol book four times in a row. It doesn’t eliminate the jealousy, but it keeps it from festering.
Last week, our 15-year-old water heater finally died, and we paid the plumber $1,800 we’d been saving for a weekend trip to the lake. Jude was teething and up three times the night before, Lila had a 20-minute meltdown because I cut her grilled cheese diagonally instead of into squares, and I sat on the kitchen floor at 9 p.m. eating cold leftover pizza, wondering for 10 minutes if we’d made the wrong call. If we’d stopped at one, I’d get more sleep, more time to finish the books I never read, more money for trips and new shoes and all the small stuff we skip now.
Most days, though, I look over and see Lila teaching Jude how to blow dandelion fluff in the backyard, and I know it was the right call for us. But it’s not the only right call. Clara doesn’t owe her MIL a second grandkid, and her first kid doesn’t owe anyone a sibling. The only reasons that matter are the ones she and her husband can live with, on the hard days and the good ones.
Last weekend, we ran into that same girl Lila played with at the children’s museum two years ago, at the playground. They recognized each other immediately, and ran off to climb the monkey bars together, Jude toddling behind them yelling and trying to keep up. For now, that’s enough. We’ll see what the future holds.
Please indicate: Thinking In Educating » Why We Decided to Have a Second Child: What I Think of MIL’s ‘Give Your First a Sibling’ Reason