Why do I feel so guilty about buying books? Textbooks are no-brainers; those are non-optional but even stuff that's 'educational' and related to my field makes me feel uneasy purchasing. I guess it's the way I was raised, I always hear my mother's voice in my head going 'You could just check that out from the library!' but it's not the same as owning a copy and marking it up though. Am I the only one who thinks like this sometimes?