I’ve often said that raising a kid is a job for 3-5 adults. We used to have a system that supplied those adults in the form of grandparents and aunts and uncles. Modernity has largely broken that system, without really providing a substitute. We do have food delivery, entertainment, and so on, but not a real substitute for the actual persons. And I think a lot of parents believe they’re supposed to be able to do it without the help. So you end up with a situation where a grandparent watching kids is a real anomaly for everybody. And there’s not an obvious alternative person who’s playing that role. Forget about whose responsibility this is. The thing to notice here is that a culture with these problems will end up having far fewer children than a culture which has a solution to them.