I'm like this for everything _except_ paper books. I grew up sharing books a lot, books I finished would go to younger kids in my extended family or my mom's students, and I got a bunch of books like that as well. So we took a lot of care keeping books in good condition. I don't buy many paper books anymore, and ones I do buy tend to be new and stay with me, but folding pages or breaking the spines still feels wrong to me