Despite all the fashionable theories of marriage, the narratives and the feminists, the reasons to engage in marriage largely remain the same. True, there have been role reversals and new stereotypes have cropped up. But the biological, physiological and biochemical facts were less amenable to modern criticisms of culture.
Men are still men and women are still women in more than one respect.
To form a functioning economic unit within which the economic activities of the members of the dyad and of additional entrants will be concentrated. The economic unit generates more wealth than it consumes and the synergy between its members is likely to lead to gains in production and in productivity relative to individual efforts and investment. The members of the couple bond as a result of implicit or explicit, direct, or indirect social pressure. This pressure can manifest itself in numerous forms. In Judaism, a person cannot belong to some religious vocations, unless he is married.