That attitude is exactly what people are having a problem with. You entered a legal contract to buy the bike--for all intents and purposes, it's yours. You act as if ebay is the place to do some window shopping, "...oh, that looks nice, I'll bid on it, hope I win, and figure out later whether or not I really want it." Do you really have no idea how frustrating that is to a seller, not to mention the other bidders who sincerely tried their best to win that auction?