In my opinion, you are too high and mighty. First off, joining a game and losing that game does not give you a loss for the leaderboards. However, if you win, you will get a win.
Just because the hunters have a ton of strikes doesn’t mean the monster is not about to die himself. With teamwork, you can still pull off some amazing things. Besides, if its really that bad, then the game will be over in less than a minute anyway.
But one could be considerate of others and realize that people playing in multi-player modes want to play with other people and not bots. One could swallow their pride, and give their best effort at an auto assigned roll. They could then improve their skill with said character, they could communicate with their team to find out info, such as what monster are we hunting, what stage and maybe do we have a Laz healer so I know not to rez people if they go down.
Its just being selfish to not finish a game with people that may very well give you the specific role you want on the next match. But you know, AMERICA! and all, so freedom to be as selfish and bitchy as you wish.