Why Do We Sometimes Love a Book More When We Read It at the Right Age?

Have you ever read a book years ago and felt almost nothing, only to revisit it later and suddenly understand why people loved it so much? Sometimes the story hasn't changed at all, but we have.

Frankly speaking, my opinion does not generally change. If I didn’t like or liked the book when I read first time, my opinion remains the same when I read it again years later. However, sometimes when someone recommends me a book and I didn’t like it fist time, and it the person says it is good and asks me to read again, and I start reading again just after few days or weeks, I end up liking it more. Maybe because I understood better