My mom and I were just talking about how much we hate rummaging through second-hand or discount stores, and would rather pay full price. She mentioned discount stores like Ross or second hand clothing stores, and I mentioned used bookstores. I think some (many?) people love the thrill of the hunt and enjoy having a pre-loved item with history. /r/books definitely makes me feel like the minority here. Otoh I don't mind a well-curated used bookstore, preferably with a selection of new books - several bookstores in San Francisco have this happy medium.