Threads are closed and deleted when they don't conform with the rules. We don't discuss politics and controversial issues outside of the automotive sphere of interest here (and gay marriage certainly isn't one), simply because such discussions in Internet forums rarely don't degenerate into something truly awful. Those are the site rules. If you wanted to discuss while Sarah Palin is the greatest thing ever, you'd have your thread closed and deleted as well.
Again, if you want to point fingers, please do. I find it extremely in bad taste to throw about accusations that way.