At this point, we have had a real problem with space in our home. My wife has a pretty massive book collection, so for new titles, I go digital for most book, video game and movie purchases for myself. I like to listen to podcasts or books while I go running, so I sometime purchase books through audible as well.
I never really purchase paper books anymore unless I want to get a very nice, illustrated version of a book I love or unless it is a very old printing of a classic book.