@jgoerzen I rarely go read a book more than once which is one reason why I nearly always get books from the public library, and only if I think I will want to read it again, more often to reference non-fiction than fiction, will I buy it. Do you find that you go back and look at these thousands of books again and again? Then again chances are our family probably owns over 1,000 too with all the kids' books, but I only catalog those that are "mine"