[moffkalast]

Those harder times that caused more trauma were themselves almost always caused by traumatized people who had no way of getting help. Friend/family support systems rely on people actually knowing what to do, and most have no clue whatsoever. The treatment for "shell shock" was to man up, and "hysteria" got you an ice pick to the brain.

Evolution works on the scale of millennia, we've been the same organism for the past 300k years and it's random best effort that only selects based on what kills you before you procreate, it doesn't guarantee anything at all.