I only get mildly annoyed if I go on a several death losing streak (I had to quit the game for the day when I went 5 and 15+ for two games in a row). I almost never rage-quit. The campers and grenade launchers I'm fine with. Now my brother on the other hand is a great player, but really tends to curse a lot when he starts losing because the bottom person on his team is play that badly or when he goes on a losing streak from an off day.