Just for argument's sake...
If there really was a world and time such as depicted in Avatar, these losers would be doing the same thing they are doing now. They would be wasting away their mundane and mediocre lives, as their ass slowly spreads over the seat cushions, while the real warriors and adventurers are out there living life to the fullest. You are, what you are, no matter the time or place.
Back when I was in the 82nd Airborne there was an RTO in HHC who didn't like the idea that he didn't live the life of the infantry. He wanted to do more and always ended up delegated to the Commo room, not going into the fight. He decided he was going to join the Foreign Legion, so that he could do some action. My comment to him was "if you go there, what makes you think they won't stick you in the Legion gym, handing out basketballs?"
You are what you are, no matter the time or place. It is in you, and it has nothing to do with the world you live in.
A & C Company, 3rd Ranger Battalion 1984-1986
2/325, 82nd Airborne 1979-1984
F Company, 51st LRSU 1986-1988
5th Special Forces Group 1989-1995
3rd Special Forces Group 1997-1999
RS - DHG 5-85