Uhh, if you do leave, then selling your account is useless. The only thing you can possibly sell is items, which can give you in-game money and we come back to the same concept that selling is useless.
Now... I don't know you, and if I were you, I wouldn't have made a thread for people who dont know you either vote wether you stay or not. If you feel down because people don't treat you properly, move on. If you really like the game, and the community, then a couple of probs shouldn't stop you from playing.