While it baffles me (since I'm such a pack-rat about books ... well, about everything, actually), I see a lot of folks engaging in that sort of read and release behavior. My mother and aunt buy books, and trade them amongst themselves and then donate them to the library or give them away to some individual person who might find them interesting.
I see what you're saying, rluazon, and I agree that it makes sense, but a lot of folks don't seem to care if they get any investment back on their books. If they can share them, great, but they don't seem to mind much even if they can't.
From that point of view, the perfectly logical, valid point that you're making is just not all that compelling.
