I can think of dozens of reasons I buy used books, including the availability of out-of-print titles, price, and the happy feeling I get from knowing a book is being "reused" instead of recycled.
What about you? Do you buy used books? Why do you? Or don't you?
For fanciers of used and rare books lucky enough to be in Portland this weekend, try to stop by the Rose City Used Book Fair, where 40+ dealers will offer a treasure trove of cool books and ephemera.
If you need further encouragement, check out this spify "info-graphic" the folks at Thriftbooks came up with and asked me to post.