The first discovery made by Adam and Eve after they disobeyed God was sex. Sex is sin in Christianity except when the union takes place with the sole intention of procreation like a farmer sowing the seed. Saint Augustine said, Adam and Eve would have procreated by a calm, rational act of the will if they had continued to live in the Garden of Eden. The Catholic Church wants sex to be a rational act for it not to be a sin. The body and its passions a...