Sure, you’ll need diapers and a car seat, but beyond that there’s not a lot that’s absolutely necessary.
There’s so much stuff that people think they need to buy, ranging from special vitamins during pregnancy to hypoallergenic formula and baby swimming lessons and educational toys for every age bracket...
And then you realise that people who make half the money you do get along just fine and their kids are doing fine and somehow they only need half as much money.
Sure, we do spend a lot of money on semi-useful kids stuff (like those skiing lessons that our older son didn’t want to continue after the second day...), but it’s all optional, and if we didn’t have kids I’d probably have a nicer car, but who cares.
Second is the increased rent/mortgage of a house with an extra bedroom. I pay ~$600/mo more for an extra bedroom and have a substantially longer commute than most of my coworkers to live in a place that can accommodate our family.
Both of those costs far exceed anything else we've spent on our son, which mostly falls into the "optional" category you mentioned.
Both of these factors are much more important in high-cost-of-living areas, which may explain in part why there aren't many kids in San Francisco.
It's certainly optional (you may be comfortable letting your kids go it alone for college tuition), but definitely worth making an intentional decision on and planning for as soon as you're able.
Also, I'd strongly recommend you use several of the many "future cost of college" calculators available out there. For example, a college that costs $35,000/yr today is estimated to cost $56,000/yr in 10 years per Vanguard's calculator's defaults[1]. The "Worlds Simplest College Cost Calculator"[2] also provides a reasonably good and easy to understand picture of how much you'll have to contribute monthly to reach your goals by the time your child starts college and brings in some reasonable numbers for grants and scholarships based on your income.
You could certainly "oversave" if the insanely high cost of higher education manages to correct itself, but pretty much any tax-advantaged educational savings account can be easily converted to retirement savings.
In my case, it's also provided a bit of extra motivation to support my children in developing good study habits early on in their education. Once you understand the likely cost of college in 10, 12 or 18 years, the prospect of academic scholarships becomes really, really appealing.
[1]https://vanguard.wealthmsi.com/collcost.php
[2]https://www.savingforcollege.com/calculators/worlds-simplest...
Any parent planning on saving for college needs to have their retirement savings locked in and fully funded first. You can borrow money to go to school, but you can't borrow money to retire.
Like I'm only being partially facetious here, but my suspicion is even accounting for currency differences you could come out on top.
https://www.amazon.com/HUGGIES-Little-Snugglers-Diapers-Pack...
Though we use washable diapers I suspect the cost-savings aren't as large as predicted as washing-machines are pretty hungry when it comes to electricity, and we run ours at least once a day.
https://www.aap.org/en-us/about-the-aap/aap-press-room/pages...
https://www.aap.org/en-us/advocacy-and-policy/aap-health-ini...
Edit: https://ods.od.nih.gov/factsheets/Folate-HealthProfessional/...
In the US and the rest of the developed world pretty much most grain products are fortified with Folic Acid (as well as other vitamins) these days and have been for about 20 years.
Outside of some edge cases vitamin supplements aren't really needed just talk to your doctor.
https://www.webmd.com/baby/folic-acid-and-pregnancy#1
We have been fortifying food as a response to the fact that pregnant women aren't uniformly getting enough folic acid. Downplaying prenatal folic acid supplements is like saying we don't need to worry about driving safely because people have added seat belts to cars. (One could imagine safety equipment that is so good we don't need to worry about how well we drive, but we're not there yet.)
This is dangerous misinformation. Nutrition during pregnancy is quite important and worth getting right.
The cost of someone looking after your children while you go to work is not optional.
You can count me as at least one new dad you've, well, not necessarily met, whose primary concern is more along the lines of, "How the hell am I gonna be involved with my son's life?" (:
I’m actually in the process of changing careers due to the realization that remaining on my current track would put me at work before they get out of bed and home from work after they’re in bed for the next 15-ish years. I refuse to miss my kids growing up during this one shot at life I have.
It's really amazing to me how this child has changed us and our lives. Not to say that my wife and I expected the kid to pop out and life to return to business as usual, just that I didn't truly comprehend how profoundly this experience would change me. It's intense.
This is so huge, not only so your kids know their extended family, but also to have some basic help. We've found that even my sister who lives 45 minutes away is just a bit too far to see them as frequently as we'd like, with her busy family and all. My advice is to move closer than you think you ought to!
I’ve been able to arrange things and arrive at work a bit later, so I see my kids each morning and take them to school. Then I stay a bit later at work. It also means I don’t see them most weeknights, but I see them every morning (barring the rare unmovable meeting).
Some of my colleagues do opposite. But there are also parents that just don’t see their kids at all until the weekend.
Most (not all) of the time I've observed this, "stay at home dad" is a euphemism for "lazy bum".
The problem, of course, is finding those books.