We are talking about a fictional book series that is controversial....how can you be so SURE you wouldn't agree that some things may be inappropriate to children.
Did you know it begins with the bloodly slaughter of Harry's parents?
I would think if you want to defend something you would buy the book, and read it. It's an easy read, and then you may really understand what people are objecting to.
I'm not saying it's the work of Satan, but I've got some reservations and probably can see both sides here. I've talked to teachers about it, and they just LOVE the series because it gets children to read. I wasn't so sure that should be the only criteria.