Same difference. It's not like there is a working gaydar. The point is people seem to care a lot about that and gay marriage... enough to do something, enough to sacrifice other priorities.
The same is not true of hard work on Sunday, adultery, greed (imagine if greedy people were barred from business by an ammendment), etc.
Only homosexuals seem to warrant such motivated religious consciousness.

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"Conservatives say if you don't give the rich more money, they will lose their incentive to invest. As for the poor, they tell us they've lost all incentive because we've given them too much money."

-George Carlin