SKULL.GIF posted:

humans didn't evolve to be nuclear family units completely and totally independent of anyone else. children were raised in tribes and communities for most of our evolutionary history

parents would be able to easily hand the baby off to a grandparent or sibling or friend or something. the expectation that it's the mother's or father's duty to exclusively spend time with the baby until they're toddler age or older is what leads to stress and exhaustion, even in an environment where the parent has the financial ability to actually do that