I keep all of my books on my eReader. I like to reread books and never know what I might be in the mood to read at a later date.
I also still have all of my DT Books. I have a large walk in closet that I converted to a library. There are book cases on every wall and the ones with paperbacks are double and triple filled. I even have books filling the space between the top of the books and the bottom of the shelves. I also have bookcases in my office. My spare bedroom closet has bookshelves full of books in them. The master bedroom has a bookshelf. The upper shelf in the walk in closet, that we use as a closet, has books on the top shelf. I do not have any books in my son's room.

Apache