This is a long-running joke in my house, though I've mis-remembered it for years as a Kids in the Hall sketch:
better than Cats
I think a lot of "book people" take a lot of comfort in rereading a book they love. Gretchen Rubin talks about this a lot on The Happiness Project. Benjamin Disraeli famously read Pride and Prejudice seventeen times. My parents once bought me a new box set of the Little House books, because I read my first copies so often that the pages came unstuck from the bindings.
Do you have a book that you read over and over? What makes a book worthy of the reread?