i'm a christian, and a teen, and I think the whole thing is stupid. If you don't want your kids to read the Harry Potter books, then don't let them. But it's none of your business what other kids read. It's so stupid to try to make the rest of the world how you want it, because no one is ever going to conform to your ideas if they don't agree.
I also think it's stupid that some people claim that Harry Potter turns kids away from Christianity, and makes us want to join the occult. Dude, most of us are not stupid enough to let a work of fiction turn us into Satanists. And the people who do let that happen were probably messed up before they read the books. There's weirdos in every crowd. I mean, some people will watch Star Wars, and run around claiming their Jedi's. There's no end to the foolishness. But as long as you can distinguish between fact and fiction, there is no problem with reading the Harry Potter books.
*big breath, now that I'm done with that rant*