For a lot of them it was the frustration level too. Same guys flying the same planes doing the same stuff to build their score. Same with tanks, same guys hiding in the same places to pick off others. Never looking to defend a base, or attack one they just wanted kills.
So game play going that way made a lot of guys get bored with the whole mess and look for something else to do. They have their own ARMA server setup and spend a ton of time in there. "Way" has the biggest health issues, always tripping over the dog and messing up his foot, poking himself in the eye with his teaspoon in his cup, but we are all pulling for him.