this is actually more common place than you might expect. just like wearing tube socks vs ankle socks has become some sort of age delineation, owning books is as well.
I have no books that have any value other than I already own them. After moving across the country a couple of times with them plus all of the other various moves, I have thought about getting rid of them numerous times. The only reason I have not is just sheer laziness on taking them some place. My most recent move left them in boxes and just stored.