Lmao I might want to amend that statement, but it's just little hormonal triggers and whatever. Which is very aggravating - one wants to feel entitled to their sadness and despair, and not have it flapped away as Just One of Those Things. And it makes more sense to feel sad than to feel constantly happy, anyway, so which emotion is the nasty little impostor? It's so complicated.
Same. I just perused Wikipedia for a few afternoons. Fascinating stuff. And sociopaths and psychopaths are much maligned, but should that be right? They've just got a piece missing.