If I'm disinterested in a book, I'll simply put it down and forget it - maybe whine a bit about how it's boring or whatever - but I won't say I hated it. Hate takes effort. If I'm gonna spend energy on hating something, it's fucken well gonna worth it. That books has to work pretty hard to earn my hate. And reading those books is really not a waste of time; I gotta figure out why I react, which, for me anyway, has never been fruitless.