Lots of others have addressed the fact that Humans did in fact teach each other how to raise kids, but there's another point not yet addressed: why are you assu

Lots of others have addressed the fact that Humans did in fact teach each other how to raise kids, but there's another point not yet addressed: why are you assuming parents haven't been terrible for millions of years? Raising angry, depressed, violent, narcissistic bullies might have been an advantage. It's also possible they were all great parents, but that's the point -- we have no evidence either way, so appealing to our ancestors as paragons of parenting is doubly flawed.