Within the family, obviously, children are born and reared. When family life is sound, children will nearly always be sound in mind, body, and spirit. The family is built on the principle of selfless love and nurtures that principle for the benefit of the entire society, for communities and nations too require that spirit of selfless love. Indeed, there is a powerful sexual component in married life, but that pleasure is not the sole element out of which a marriage is constructed. Married life entails a world of both blessings and obligations that transcend the physical.
Sexual relations are only one aspect of marriage.
A man and wife, by their love, are united by an internal unity that involves the total merging of two independent personalities, so that they become a single unit. That merging of two into a single unit does not come about because of profit, pleasure, or utility, and nearly always includes hard work, sacrifices, and sometimes real sorrow. Inasmuch as love is its source, that work, sacrifice, and sorrow, taken on for the sake of other family members, are not looked upon as terrible burdens, but as privileges, accepted readily because they offer fresh avenues for the expression of selfless love. Such love is cultivated most frequently within the traditional family unit. In contrast, homosexual unions are fleeting matters, mostly anonymous one-night affairs, composed entirely of egocentric calculations involving the satisfaction of uncontrolled passions and appetites.