I think that gays should be allowed to marry in the USA because there are so many rights that married couples get that gay ones do not, and there are just so many laws to re-write to make them match up with a 'domestic partnership' or something like that.

And at least here, no church has ever been forced to marry someone they did not want to. I do know people who were turned down for church weddings for not adhering to other church teachings. (Or some faiths wont do interfaith weddings, and my cousin was denied a church wedding because she wanted it outdoors and the Catholic church thinks you can only be married in a church.)