In other words, WHY do we (or some of us anyway) have such a miserable few days each cycle? I generally understand what is going on in the body that causes women to feel bloated, achy, tired, cranky, depressed, etc, but what is the purpose of it?
I think I could be at peace with being completely mentally miserable for a couple days once in a while if I had a sense of what the evolutionary advantage is. Like I don't mind bleeding at all; I understand the function of it and the role it plays and I find a method that works for me to tolerate it until it passes. But PMS... not so much.