Between 1967 and 1973, all states instituted unilateral divorce without damages (basically annulling all existing marriage contracts). There is no other form of contract that is construed to be terminable at will by one party with no recourse to the other party.
In 1973, the Supreme Court ruled (in the same term that gave us Roe v. Wade) that marriage did not impose any obligations on a man not also borne by single men with regard to fatherhood, thus rendering a man's marriage promise to support all children born to his wife during their marriage and not otherwise nugatory.
Laws against adultery were already in decline by the 1960s, and by 1973 there was essentially no enforcement anywhere in the United States.
Thus, the legal pillars of "traditional marriage" (permanence, fidelity, unique obligations to children) were all destroyed by 1973.
Since 1973, heterosexuals have enjoyed a novel and unique form of "marriage", which confers certain tax and property benefits but is not otherwise like traditional marriage in any respect.
No wonder homosexuals want in on it.
Well put.
ok