Originally Posted by W*GS
Going over the entirety of human history, it's only recently that the two biological parents were considered those solely responsible for childrearing.
It used to be that grandparents, aunts, uncles, cousins, older children and others would assist in that work.
I think you're referring to the long-dead caveman days which communalist types tend to refer to wistfully when they want everyone to live in their little communes. Mainstream religion is thousands of years old and it makes it known who is responsible for children. It also strictly establishes the proper family structure environment as well as parental roles.
It's also no accident that communal living is stagnant in terms of economic and scientific innovation. Not something I'm remotely interested in bringing back.
But then again, I'm not a pinko.