That's just not the kind of goal natural selection is capable of optimising towards. Natural selection instils the execution of adaptations which on average have historically demonstrated increased reproduction rates. It does nothing else. (Humans, of course, have other goals orthogonal to those of natural selection, and are capable of optimising in favour of them, but natural selection is a blind idiot god that wants precisely one thing and will always aim dumbly at it to the exclusion of all else. We're fortunate that it is so dumb and slow, because it leaves us with plenty of room to do our own optimisation with our brains.)

Can you name any other time natural selection has optimised for the pleasure of a mammal at the explicit expense of reproduction?