Then don’t do a Leveling Roulette. It’s a roulette for a reason. If you don’t like the possibility of getting a dungeon or trial or raid or whatever that you dislike, don’t do the roulettes. Otherwise, when you abandon a group of players—especially if you were running as a tank or healer, which have virtually instant queues in most roulettes aside from Alliance Roulette—you’re being nothing but an inconvenience to them, who have to either wait for a tank/healer or requeue all over again. It’s called being respectful. Your time is not more valuable than anyone else’s.
Mother of God...I don’t even have any words for this.
