To attend a book exchange

1. Because you have two copies of the same book.
2. So that someone else can enjoy a story that you loved.
3. Because you might be able to find that out of print book you've been looking for.
4. It gives you an excuse to talk about books.
5. You'll be able to see what your friends have been reading.
6. It gives you a reason to reorganize your bookshelf.
7. It gives you a reason to buy more bookshelves.
8. You'll get a chance to share books with those who might not normally be able to afford any.
9. Because it is more exciting than a sock exchange. And normally less smelly too.
10. Because you want to share your love of books with your children.