youbet
Give me a museum and I'll fill it. (Picasso) Give me a forum ...
Philosophically, I think some of the best things you can do for your kids don't cost anything other than your time and attention.
Take note our kids are still young (both will be in elementary school this fall), and so I could be in for a very rude awakening (and I have budgeted for this to a certain degree). But we also live in a moderate income area ("gentrifying area") so our kids don't see lots of spoiled rich kids surrounding them all day (another benefit of living in a moderate cost neighborhood and going to schools with a high proportion of low income students).
Yes, you could be in for a rude awakening........
Raising our family cost us all our money and a little more. Briefly empty nesters, we now have the grand youngin's to take over looting the bank of Gramma and Papa! Kids and grand kids can consume an infinite amount of resources.
But in the end, raising the family just sets the bar a bit higher on the way to FIRE, just another expense to account for and take care of. And, for us, the rewards are well worth it.