Several years ago I purchased a Kindle because I was running out of book shelf space. Since then, I have ordered many of my favorite books for my Kindles (yes, I now have 3 different ones). I passed most of my paper copies to friends who then either took them to nursing homes or to another friend who worked with a military group to send books overseas.
And now I can put quilting books on the shelves for easier access. I don't think I will ever be comfortable doing quilt patterns from books on my Kindles.