Ive never read any of the Harry Potter books and only saw the first 2 movies about 6 months ago.
I honestly dont get how it is so big?
The books (so far, I'm on book 3) are better than the movies, but the movies are really good as well. As for not liking it, it just depends on taste really. For example The Lord of the Rings bores me, I can't even get through the first movie, yet everyone seems to love it.