I think books in libraries are happier than a lot of other books. They have a secure, hopeful sort of life. And while the stacks and shelves of bookstore books anxiously flaunt their covers and thrust their spines at the public, hoping to be browsed and bought, the books at the library can rest easy. "This is my home. I am so glad I have a home! So happy to be stamped 'Property Of' and fitted with my inside vest pocket for the date-card. Oh, it's empty now, we've all got bar codes - but it's a snazzy accessory nonetheless!
"If someone picks me up to borrow and read, I'll be happy! I like to visit, and for people to get to know me - but I love knowing that here is where I belong and will always return. Back to my same happy spot on the shelf, favored by the afternoon sun. Ready to be read by any and all, but happy and content. Just where I am!"
The bookstore book, on the other hand, has a certain forced-cheerful near-desperate look to it sometimes. "Hi! Hi! Hello! A lot of people love me, I could be found very interesting if you give me a chance. I won the prestigious Geathers Book Award! In 2006. Oh, dear."
I try to rescue as many of those as possible.
Then once I've read through, if it's one I can live without keeping on my shelf - I'll donate it to the library! Where it can be happy and secure, be content and be read. Sometimes I'll even bump into one of my books again, at the library.
Which can be a little bit awkward, though.