I like Harry Potter, and during elementary school I was obsessed with it. But then I started getting really really picky about continuity and started seeing little things that don't make sense in books, and it ruined a lot of otherwise very good books for me. I wish I didn't have this problem.
Harry Potter is still a very good series (though I didn't like the later books nearly as much), and I agree with Kobold. Even though it doesn't have the best magic system, even if there's one too many scenes with Harry yelling at his friends in Deathly Hallows, even though there's a bunch of nitpicky things I can say about it, it's still a good series, because the characters are people you want to learn more about. They're normal people, with normal flaws, mood swings, normal arguments and teenage drama. And yes, Harry has abnormal bravery- but I think it's even more inspiring with Ron and Hermione, because sure, they were brave, but they weren't heroes. They became heroes, though, because that's what situation they were put in.
I hope this makes sense. I'm not as good with words as Kobold, but I hope I got something across.