Over the wknd. I heard interesting presentation on book by Nancy Polikoff called "Beyond (Straight and Gay) Marriage: Valuing all Families Under the Law". She discusses how there are other tools to take care of what we assume comes with marriage, but that marriage is convenient "one-stop" mechanism by which we make one decision for a multitude of default choices. Book isn't against marriage, just an examination of the functions it fulfills, and how legislature enshrines the union of two "opposite-sex" people in way that excludes other relationships, which might take priority depending on circumstance.
For instance, if one's companion is terminally ill or in accident, which person in one's life does one want making those "end-of-life' choices on one's behalf ? Who does one want to leave one's estate, or children, in the care of ? One's parents, one's ex-spouse, one's current partner ? The law says one thing, presuming certain levels of relationship take precedence-but the lives of real individual people often would dictate something more nuanced & complex (in terms of one's right to decide, one's last wishes).
For those who do consider marriage a spiritual, romantic, or otherwise special status, no doubt they could provide many reasons why marriage is important to them. I just mentioned presence of legalistic purposes for the institution because those are what matter to me (since I don't have kids, have no assets nor debts, and have been married & divorced already).
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*"I don't know what it is, but I know what it isn't."*