So when do we expect the ditching of all other non-canonical works of fiction?
After all, Dickens and Wodehouse and Trollope aren't exactly advancing the cause of Christianity.
Many Wodehouse characters are involved with parsonages or want to marry vicars or attend Sunday morning services and such. Harold "Stinker" Pinker (and his prankster fiancee Stiffy Byng) spring to mind.
Just because something isn't EXPLICITLY Christian doesn't mean it is anti-Christian. Some FReepers are actually hot and bothered about "The Lion, the Witch and the Wardrobe" because it contains magic. Come on, C.S. Lewis leading innocent children astray???
Any-hoo, I agree with you: Christians with a good solid foundation in the church can enjoy Harry Potter without being seduced by the dark side, just as they can enjoy "The Lion, the Witch and the Wardrobe" or "The Lord of the Rings" or the Prydain Chronicles, all of which contain magic and evil characters and struggles, battles and wars. In all of the good vs. evil stories above, good always wins in the end, which is an important lesson itself.