God certainly did not have to design the human body in such a way that sex would be pleasurable, but He did. There is only a narrow window of time each month that a child can be conceived by a couple, yet there is a dimension of the physiology of sex that makes the desire for mating far more frequent than what is actually necessary to preserve the species. It’s as if God, in nature itself as well as in His Word, is prescribing an intimate relationship in marriage that is not only spiritual, emotional, and mental, but also intensely physical.
