Comment by lantry

> there are a lot bad things that can happen in 15 year

IMO, Our species has thrived because of our ability to communicate and work together, not because our gender roles somehow make us specially equipped for survival. The atomic family is a relatively recent development, and for much of history children were raised by a community. If your natural parents died or became unable to raise you, you weren't left out to starve. you were taken in by relatives or neighbors.

If our gender roles were different (and there are many cultures and places in history where humans had unique social structures) it would not "break evolution by natural selection". Plenty of species have gender roles that don't fit traditional western models and they continue to be subject to evolution.