There's a lot going on in here. Both on topic and partially off. Felt the need to pop my two cents in, however...don't mind me.
I personally believe that the US should just allow same-sex marriages, then leave it up to the individual churches to decide if they want to facilitate them or not. That way, everyone gets what they want. The church leaders who don't want it in their places of worship don't have to and the people who want to marry their same-gendered significant other can do so. I'm also all for teaching theology classes. I've never been to one, personally, and felt like being taught creationism alongside things like the Big Bang and evolution would be kind of strange. It belongs, in my opinion, next to other religious-type material. And Arlen, that you go to a Catholic school with that level of comfort with other religious ideas is amazing to me. I wish every person/school/state/country were that tolerant.
This topic has a lot that relates to me, for various reasons. I have friends and family in the LGBT community, as well of being part of it myself. Some of my family are fairly strict Christians who would have a lot to say to me before deleting me from their lives. I've had friends ditch me for it as well. I've been lucky enough to have friends who would stick by me and not really mind what path I'm taking, as well as a mother who, despite occasional "it's just a phase" rants, seems to have stuck by me through my telling her.
I've seen both sides of this argument and I remain surprised at how much people bicker over something that's so simple...love is love, no matter who it's between, and it will always be that way. Alienating people will do nothing but cause suffering for those you may least expect. My grandparents are vocal against the same-sex marriage movement. My grandmother went so far as to say she was ashamed of her home state for allowing it. All they have managed to do so far is alienate me further to the point where I'm afraid to talk to them.
There's also the issue of transgenders to think of. The argument against them, by most Christians, has been mostly "God made you that way for a reason." God also made many children with illnesses or physical deformities that are 'fixed' by medical science. Is that wrong as well? Is replacing a failing kidney or heart with a prosthetic one wrong? What about people who have been injured and had a limb amputated? Should they get prosthetic ones? Just because you don't understand the reason why someone is undergoing surgery doesn't mean they shouldn't do it. And using God as your basis, or YOUR unease with the idea, against them as a reason why they shouldn't doesn't make sense.