Well, I'm a Christian and I watched (notice past tense) Harry Potter 1 and 3.
Don't get me wrong... I think promoting witchcraft as a pop and hip thing is wrong... dead set against such practice... but sometimes it's difficult to argue for or against a specific movie if you haven't even attempted to watch it. Non-christian might call us dogmatic and narrow minded.
It's just like us pleading the Jews to watch Passion of Christ by Mel Gibson before passing judgement that it's aimed as a propaganda against Jews.
If I were still in Wnnipeg, I'd definitely see it in 3D with my friend Jim. In my new Long Island life I probably will never get a chance.