Were "civilised animals". We dont piss on lamp posts (well, most of us dont) but we do piss. We dont hunt for food but we do work for money. Put us in that situation where we dont have supermarkets and fast food stores, and we will hunt.
Youre right though, the feelings will always be there. Even when were 80, well see a hot 18 yr old and well think dirty, dirty, dirty old man shit. It doesnt mean well go and do anything about it.