Today, it is used primarily for this purpose and as part of the ritual of conversionthough in some communities observant men periodically immerse themselves for reasons of ritual purity. A man's desire to have sex with another man is not a sin, so long as he does not act upon that desire. There is no explicit prohibition in the Old Testament of premarital or extramarital sex by men, except for adultery, which meant having sex with another man's wife. In Judaism, sex is not merely a way of experiencing physical pleasure. He should not depart from the ordinary pattern of the world.
But why all these precautions?
Issues in Jewish Ethics: Premarital Sex
This commandment was originally binding on all of humanity, as it was given to Adamthe progenitor of all mankind. Because otherwise, one might emit semen in vain, and R. Different Kind of Hostage. The fertility benefits of this practice are obvious and undeniable. Homosexual intercourse is also considered an act of sperm in vain, in addition to having its own prohibition.