Why does God hate sodomy?

So I met this girl at church last week, and she's one of those reserved, religious types. So of course I ask her out! So after service, we grab brunch and generally hang out the rest of the day. Later that evening, after a few beers, she asks me up to the bedroom. And I'm thinking "Hot Damn!" So we're fooling around and it starts getting hot. But then she said something about preserving her virginity so in my beer-induced state, I figure, "Hell, I'll go through the back door!" Big mistake... Not only does she put her pants back on, but she goes into this long-winded tirade about Sodom and Gomorrah and how should be only for procreation and all that. Needless to say, God hates ... Why is that? I mean the world is over-procreated already so should be for pleasure, right?