Which is precisely why the government should get out of the marriage business entirely. If the government wasn't bestowing special status on monogamous heterosexual marriages (including Britney Spears' one day marriage, Cher's nine-day marriage, and Anna Nicole Smith's highly peculiar one-year marriage), then other groups wouldn't be clamoring to get their government-issued licenses too.
That's crazy. You're advocating a change in government policy that would lead to the end of the traditional American family and the end of our society as it is today. The rights of monagmous traditional marraige are embedded all though our legal statutes and if you start tearing those rights out of the statutes that would throw our legal system into chaos.