The problem is that supernatural powers are REAL. The Harry Potter books use all of the trappings of real people who are evil (witches casting spells, conjurers, etc.), but portrays it as if it is possible to use these very real powers and NOT be an abomination.
I don't expect the atheists and non-Christians on this thread to get it. They don't see what the big "fuss" is all about and why Christians avoid spiritism and the occult, because they don't acknowledge that these things are real.
But as a Bible believer, you KNOW that these things are real. What we do with our power is what God wants us to do with it. Not to get vengeance on people who made us angry or any other self-centered purpose.
The Harry Potter books take evil things that exist (witches, conjurers, spellcasters) and portray them as doing good things for themselves and the people they care about.
Bingo!
Now you've got it. They will not/can not understand where you are coming from.
I, on the other hand, have a very good idea. A few weeks ago I finished reading a book by Malachi Martin called "Hostage to the Devil". Martin was one of the leading experts on exorcism. This book contains 5 case studies of real exorcisms. And it scared the you-know-what out of me. So, if folks here don't want to believe this stuff, fine. Whatever. No thanks.
No the HP books do not use all the trappings of real people who are evil. They aren't that kind of withc, they don't cast that kind of spell. They are mutants, you could rewrite the entire HP series as X-Men in about 2 hours, really it's the same thing: mutants with special powers who feel a sense of duty to use those powers for good in a boarding school learning to control their powers and occassionally getting into fights with some other mutants who use their powers for evil. It's a freaking X-Men story (well probably New Mutants the X-Men spinoff that focuses on the younger students at Professor X's school for the gifted), just with different nomenclature.
I know these things are real, I also know these things have ZERO ressemblance to what goes on in HP. One of the problems Harry is facing in the books is that he's become vengeance obsessed, it's his temptation to the dark side, lifted right out of Star Wars.
No the HP books take an imaginary world and give it familiar words to help the readers understand it quicker so they can dig into the stories faster. They do things for themselves, we all do, they do things for the people they are about, this is a good thing, and they do things for the good of all, this is a very good thing. Some of them have even sacrificed their lives for the good of all (and more deaths of good guys are coming), this is the ultimate good thing.