I'm not going to say thank you after returning a book I borrowed
Why don't you want to thank someone for the book?
I don't like thanking people, and I hate books.
You really should say thank you after you borrow something like a book. It's only right. It's good you returned it, though.
No way, I just said I dislike thanking others. There's no way you can get me to do that.
It's best to thank someone who loans you things. If you don't, they may decide not to loan you anything else in the future.