That's why there was a split within the Anglican Church, because some were for (folk like you) and some were against. My wife is Anglican and has strong views on same sex marriage as does the vast majority of her Anglican Church (Sydney) and they completely disagree with it. I wish they were more like your church! In fact there's a massive issue in Australia at the moment regarding same sex marriage.
im also aware that you can't paint everyone with the same brush so it's good to know everyone isn't like that :)