I think you miss understand when i say "Support" As in i'm trying to kill and hold objectives, not going out of my way and chasing down people half across the city (You know damn well people in teams do that, they do for me at-least) while trying to assist in gunfights. Offering medispray if we are stuck in a small room and under fire, or we just got hit by a nade, is useful. I'm not amazing at the game, but i know what i'm doing in most situations.
Even if people do kill me i still try to focus on the mission and assist them in the whole not dying thing. My problem is if they are clearly out skilled, along with myself and turn to other players since they cant possibly put the blame on themselves because they are so perfect and pro, rather take their frustrations out on their team, is where i annoyed. So support doesn't really just mean offering ammo and such, i'm just not actively chasing people down and jeopardizing an objective.