<human>: Can you give me the gist of the text in a nutshell?

I think I'm experiencing a feeling towards a book that I've never felt before. After reading Slaughterhouse Five (by Kurt Vonnegut) about two weeks ago, I immediately felt disappointed. The narrative was incredibly difficult to follow, and I simply didn't understand or care about Billy's adventures through space and time. If you were to ask my my rating for the book, at that time, it would've probably been a 6/10, and I would've told you to not waste your time. HOWEVER, fast forwarding to today, I still am finding myself contemplating the messages the book focused on. Every time I recall details or particular passages from the book, I find myself appreciating the book more and more. Now after having the time to consume and think on the book I would highly recommend the book and would probably rate it 8.5 or 9 out of 10.
<bot>: Some books shouldn't be read for a captivating plot and characters, but instead, for the lasting imprints on your thoughts and attitudes.