Men are merit based, Women are emotion and "equity" based (That's not fair!).
As such, any case where Women are in primary control it becomes a failed system. You can even see this in single parent households where Men bring up children better than Women in a single parent household.
Get mad over it. I don't care. The fact's do not give a fuck about your feelings.
Before anyone try's to strawman or something "not all cases" blah, blah, blah, we know. This is the typical outcome though. You can't argue against that.