If it's just your hormones, society needn't care

A clear explanation of why "gay" (hey, get your own term) "marriages" (this term is already taken too) are fundamentally flawed, at the very least by the definition provided (though it's a good representation of the common usage): http://www.jsonline.com/blogs/news/100804869.html

Here's an even better explanation that doesn't rely on one person's limited definition: http://www.catholic.com/library/Homosexuality.asp This article addresses the question from many different angles, rather than just the common "the Bible says it's wrong."