Earlier quoted context omitted.
> I returned the book. Wait, what? You read the book, returned it, and feel no shame in admitting it?
wut. if the book isn't good why would one feel ashamed of returning it? is there a moral obligation to keep a bad product?
> is there a moral obligation to keep a bad product?
No, but I feel there's a moral obligation to not ask for your money back for a product you didn't like after using it. This of course doesn't apply if the product is faulty/broken such that it can't be used.
Do you do that for other things in your life, like demanding money back after watching a movie you later decide you don't like, or do you just walk out of restaurants without paying if you decide you didn't like the food (after eating it)?
A cultural difference, I guess.