I call it a night when the idiotic run-and-gunner on the other team kills me with a headshot and, upon seeing the replay, it turns out he was spinning in circles shooting off randomly with his FG42 and randomly hit me in the head. Thats when you throw the controller through the TV.
usually when its late and i have a rediculous game like 15-2 in search and destroy or if i have a run or 3-4 games where i go 1-6 2-7 0-4 i usually call it quits then
Some days I've just had enough and have no problem calling it quits.
On others I usually play until I make the next level or set a level in my head to quit at. I just suck when I'm tired and and know its pointless to continue.
