I've got 30 lineal feet of bookshelves in my house that are filled with books I bought over the last 30 years. If I lived in my sister's house, I'd have to get rid of 80% of them.

I could do that, but I don't have to, so I don't.

Books are the one thing that a subgroup of hackers has a hard time parting with. I'm fairly minimalistic with all of my possessions, but books... man, I would have a really hard time getting rid of my library :(

I'm a lot more pragmatic. If Amazon told me they would give me an ebook version of each book I sent to them, I would immediately get rid of 90% of my books (everything except my coffee table books and a couple dozen books that hold sentimental value.)