Based on my experience reading
not that many kind of books from not that many different genres, I think I can come to a conclusion: Good books give you inspiration, while bad books give you exasperation.
Not all of the books I read are the good ones. And I'm not the kind who let it go wholeheartedly. When I get annoyed by a book, it's pretty serious, like I will go berserk and have this sudden urge to rip the book and throw it to paper-shredder or even burn it with gasoline. I will boast to people to not read that book ever—but mostly they won't hear me because what I think as a bad book almost sometimes be considered as good book to them—and declare how disgusting it is. Yes, I'm overreacting, but now that I think of it, maybe it is just because I'm actually a bad-tempered person, yet I tend to hold my anger to people (well, not always) so the innocent books are my release. Haha.