It assumes that every family wants two parents and the children in the house together as the optimal arrangement
It also assumes that individuals prefer to live alone and not with friends or extended family
I think the extreme end of this are homes for a married couple with no kids that have a gym, a pool, a garden and basically all of the other things that would’ve otherwise been community places.
The happiest people I see are the ones who live communally. For example, I have a friend who is Catholic and she lives with four other Catholic girls in what’s effectively a woman’s long house. This is an optimal situation for her because she’s not married and doesn’t prefer to live alone because she benefits from the community they create.
Obviously, some people prefer to live alone. I would have claimed was me up until I was married but in fact, I actually hated living alone. It was just what you do and so you work to make it as comfortable as possible. I currently live alone but would much rather live with my friends but that’s just not something people seem to want.
We created a socio-economic trap where long term social groups atrophy or never form because we’re over producing things to cushion the loneliness we forced ourselves into.