Sex, in most of the animal kingdom, is pretty mundane. Why do humans make such a big deal out of it?
Humans have sex for all sorts of reasons: to increase intimacy, to express love, to have a good time. Most animals, could they so pontificate, would tell us that having sex without procreating is a waste of time and resources. Christopher Ryan, co-author of the critically acclaimed book Sex at Dawn: How We Mate, Why We Stray, and What It Means for Modern Relationships describes how we’ve changed sex from being about reproduction to being about social interaction. (By the way, we’re not the only species that’s made this switch.)