What?? That's like, what kind of idiot spends money on food they've never tried before, or a game they've never played before, or a trip to somewhere they've never been before? I like to have books, so I buy them. If I don't like them, I can give them away, but if I do, why go through the bother of tracking down free copies, reading them, and then buying them in case you want to re-read them in a year or two?