Each time you re-read a book, you find something new. And sometimes that thing is that you don’t really like it anymore.
Tell us in the comments about a book that you enjoyed on your first (or second) read through, and then changed your mind about the next time you read it. Be sure to tell us why — was it meant for a younger audience? Was knowing the coming twists and turns too distracting? Did you have terrible taste when you were younger? — it didn’t hold up to your later re-reads.