What book would you read over and over and over and over again?
I'd like to say one of the Harry Potter books, because I could discover new things each time, but what first popped into my head here was I Capture the Castle. I've read it every summer since I was eighteen, and I adore it with all its Jane Austen/Bronte allusions, the setting in the English countryside and London, the history... I love that book.
This made me think, when I was a kid I reread like it was my job. I read some of the Baby-Sitter's Club books more times than I think I want to know. Same with Susan Coopers "King of Shadows". Now there are so many new books that I rarely reread. Once every few years, or every year, I'll revisit an old favorite, but not nearly to the extent I did then.
I think this does a disservice to the writing you can appreciate better if you reread. Also shows to MG and early-YA authors how much they have to pay attention-- there's no telling how many times their books will get read.
And maybe I need to start re-reading more. Revisit some old friends.