Argument: Straights have done more to weaken marriage than gays
"The case for gay marriage." The Economist. February 24th, 2004: "The weakening of marriage has been heterosexuals' doing, not gays', for it is their infidelity, divorce rates and single-parent families that have wrought social damage."
Lea DeLaria, American Comedian: "They are preserving the sanctity of marriage, so that two gay men who've been together for twenty-five years can't get married, but a guy can still get drunk in Vegas and marry a hooker at the Elvis chapel! The sanctity of marriage is saved!"