You get so attached to the characters. It's like, you really want to go and help them in bad situations, but you know you can't, for obvious reasons. You really feel for them. Thats how you know an author has done their job.
It brings you to a far away place that you could never escape to anywhere else BUT the Harry Potter books.
It makes you think what you would do for the people you love, what you would do in dangerous situations, what your best qualities are (for which Hogwarts house you would be in).
Whenever something bad or sad happens in my life, and I really want to forget, the only way I can escape is reading my Harry Potter books. They make me feel better.
I agree with Diasasis. It really is a love and loylty.
I met awesome people on this website because we shared a love of Harry Potter :)
When you re-read the books, you don't find something more in the books, you find something more in yourself.