I've already lost electronic data by force of software or hardware obsolescence twice since the 1980s. My books are still good, though.
another hundred years from now, after Google has scanned all the paper books and they've been recycled for toilet paper, and after the great cataclysm, , some guy will come out from his cave and tell his fellow cavemen, "hey, let's go to the ruins, and see if we can find knowledge that can help us rebuild our society."
Says you. It may show them how their tribe can dominate other tribes and create a capital city where the others work for them and they watch kids kill each other (or something, I don't know I haven't read that book).
We're talking mostly about fiction here. Having an extra copy of The Hunger Games around after the zombies wander through is not going to help rebuild society.