Giving a complete twist to the concept of Sex .
Sex has no Joy and is just a mechanism for the mammals to procreate.
All the myths about Sex come from culture and if you can imagine for 4-5 generations if it is taught to children that Sex reduces your age and only do it to procreate and not otherwise what would that society look like.
Just like thirst and quenching the thirst keeps the body alive Sex helps procreation and all the other euphoria about orgasm and such crap is imaginary concepts developed by human culture.
This may sound absurd but would love to give this thought a spin in your mind and do write more about the same.