Hunger and sex are different sorts of motivations. Hunger responds to a need. If we don't eat, we die. Sex is not in this sense a need. If we don't have sex, we may feel like dying but we do not.
How do you know nobody ever died from lack of sex?
Found this dude in my apartment complex’s garages today. Of course the shelter is closed on Mondays (??!) and not open until noon every other day, and the vet can’t get me in until mid-morning tomorrow either. But I think he’ll be okay in my storage room overnight. With luck, he’s chipped and belongs to this sweet old lady named Betty who I found on our town’s lost pet facebook page.