One of the stores we stopped at was run by an older couple. I know my husband was thinking that would be us in a decade or so, if he had anything to say about it. I ran a bookstore for almost ten years in a previous lifetime and while I believe the future of print books is shaky, I know there will always be a market for books, even a secondary market.
We have literally a ton of books in our basement that we can't fit on the multiple bookcases my husband has built, yet we keep buying new and used. Not to mention the over 900 books on my Kindle. I tell you, I can't even make a decision on what I want to read next and yet I want to go to the library and check some stuff out.
I ran a bookstore for many years and this just made me laugh. Yeah, I can read your mind and that book is over in the green book section.
I have quite a few books that I could probably get rid of, resell or donate. There's a big debate now about whether one should "re-purpose" a book that would end up in a landfill or worse. I found a copy of Danielle Steel's No Greater Love that I'm going to use for an inspiration book, putting in pictures of people who look like my characters, of areas where some of my stories look place and little drawings or doodles. But this is an amazing thing:
Here's another--don't know the artist's name on this one, though.
Finally, I can't even imagine naming just one favorite book.