What social need does ssm meet?
Here, I’ll remind you of the social need that the institution of marriage meets:
"A social institution is not a “bundle of rights”, but a pattern of rules and structures intended to meet social needs. "
That is not a specific social need or list of such. It is a statement that social institutions meet social needs. The only social need you are currently discussing is procreation and we have dealt with that repeatedly.
An institution that exists everywhere on the planet is obviously meeting at least one primary, cross-cultural human need.
Yes, quite true. That does not mean that institution is
only about meeting that one human need, nor that that institution is going to take the same form in all societies. Marriage is a reasonable example----there are arranged marriages, polygynous marriages, polyandrous marriages, marriages of siblings, marriage of cousins, barriers to marriage within a clan, marriages of convenience, open marriages, etc.
aaanet.org/press/an/0405if-comm4.htm
"It is true that virtually every society in the world has an institution that is very tempting to label as “marriage,” but these institutions simply do not share common characteristics. Marriage in most societies establishes the legitimacy or status rights of children, but this is not the case, for example, among the Navajo where children born to a woman, married or not, become full legitimate members of her matriclan and suffer no disadvantages. “Marriage” around the world most often involves heterosexual unions, but there are important exceptions to this. There are cases of legitimate same-sex marriages as, for example, woman-woman marriage among the Nuer and some other African groups. Here, a barren woman divorces her husband, takes another woman as her wife, and arranges for a surrogate to impregnate this woman. Any children from this arrangement become members of the barren woman’s natal patrilineage and refer to the barren woman as their father. Among some Native American groups, males who preferred to live as women (berdache) adopted the names and clothing of women and often became wives of other men.
Marriage usually involves sexual relationships between spouses. Yet this was not true of Nuer woman-woman marriages and we find in European history cases of “celibate marriages” among early Christians. Often spouses are co-resident but very often this is not the case. A separate residence of husbands in “men’s houses,” away from their wives and children, has been common in many places. Among the polyandrous/polygynous Nayar of India, wives and husbands remained in their own natal groups with husbands periodically “visiting” their wives and with children raised by their mothers and mothers’ brothers. Indeed the only feature of marriages that is apparently universal is that they will create affinal (in-law) relationships, or alliances, a fact that Lévi-Strauss and others considered to lie behind the origin of human marriage. But even here, affinal relationships are themselves quite varied in their nature and importance across societies. Thus, in terms of child legitimacy, sex of spouses, sexual activity, residence and so on, what we see around the world in terms of marriage is most notable for its variation."
The remainder of the article (from the American Anthropological Association) is well worth reading.
discovermagazine.com/1992/apr/reversaloffortun23 is interesting about the role of mating patterns in animals and humans.
Heterosexual marriage meets a wide variety of human needs. The
only of those human needs that I can see that same sex marriage does not also meet is that of being able to produce a child that is the biological offspring of both partners. Marriage in this country
is not and has never been restricted only to the biological parents of a specific child or of any child, for that matter. If that is not the sole criteria for allowing heterosexual civil marriage, I see no basis for claiming it should be the sole criteria for allowing homosexual civil marriage.