I remember reading that trauma brain is a product of evolution. The ones that vividly remembered trauma were better equipped to avoid it compared to ones who's trauma memories were more fuzzy. If I remember the trauma caused by a predator I avoid it. If I kind of remember something about that predator that's creeping up... What was it? I'm dead. You can't have sex if you are dead. If you can't have sex you don't pass on your traits. Trauma brain avoided the danger so they get to have sex and pass that trauma brain trait on to their offspring.

And here we are. All the fun times are fading with time, but when Jimmy Meltrigger heard you cut the cheese? Always and forever as clear as day. And Barry Watnick! "I can remember it like it was yesterday, that creep Barry Watnick stole my diary."