Absolutely essential for a US book reader! (Unsure if it works outside the US)

Why buy a book if your library has it? You can usually get the e-book or audiobook immediately!

I used to be a book hoarder, but after hauling around hundreds of pounds of books in bins, the books rarely left the bin unless they were a favorite.

Now, all the non-favorites are gone. New books are all e-books because it's more convenient, or I get them on audio book, especially non-fiction books.