I'm jealous of people of the future. Why? They will have better sex. The further into the future the people, the better sex they are going to have. Outrageous! Unfortunate! True!

Anything that makes sexual intercourse more enjoyable will never be selected against. Surely this is the reason why sex is enjoyable in the first place, as a (fantastic) incentive to procreate. Therefore, it is likely to assume that sex is becoming more and more pleasureable. Hence the envy of those future nymphos and satyrs.

On the other hand, sex must have been less pleasureable for our ancestors. Weird. Like there was only a vague interest to bone. Maybe they half-assed it.