Again, have seen the loss of storage space and lack of interest in physical books.
The nature of quilting has changed and the nature of books has changed as well. If I'm browsing looking for ideas, I browse the internet (or just this forum..).
At one point I had a full bookcase of quilting books and I realized that most of them I was never going to ever use again. I'd have to look but when I moved, I moved ess than 20 books. Some of these because of various resources or exploring specific styles or ideas. Some because they are personal favorites, even if my Judy Martin Log Cabin book was before the rotary revolution and includes templates for log cabin logs... it still has great images for various settings (which I've also found a good website for).