Earlier quoted context omitted.
You're right. My wife and I have done the math multiple times, and we'd actually -lose- money if she went back to work. I remember childcare being rather communal in the US, where I lived, as recently as the early 90s. Now that the media and social media has turned everyone against each other, the only way out seemingly is to subsidize child care.
Well, a support network is one thing. My grandparents certainly babysat me on occasion, but me and my partner are quite far away (over an hours drive) away from any close family. Naturally my parents are also a lot older than my grandparents were as well, so it would be less fair on them. I really don't think the phenomenon of people having fewer kids or having kids later is a mystery!
As an adult with my own kid now, it would seem such an idea is a pipe dream.