I think your characterization is probably somewhat incorrect. I care, and I have seen other parents care. Maybe single childless people don’t care, but this is not always the case.

I care about other people’s kids. I want them housed, fed, clothed, etc.

I want my tax dollars to improve other’s lives so they have what they need to be self-actualized human beings.

I won’t let them get hurt at the playground if I can help it.

I watch them when they cross the street to make sure they do it safely.

I have little ones myself and I believe it takes a village. I’m also 37 and a German/US dual national. I was raised to care, and the societal standards for the US are not a one size fits all definition globally. My wife is Latina and her family is friendly to all children and show lots of care. Germans watch out for others’ kids as they walk to school or play on the playground. It’s disappointing to hear that the fake niceness of the US really is fake here but not very surprising. You truly can’t relate to each other. I am glad I’m moving out next year.

Yes yes. I know this is the internet and kids bad, but I do enjoy when a child smiles or has a small victory. And I enjoy seeing my friend’s children be friends with mine and grow up together.

TLDR some of us care and love to see pictures and hear about your kids.