If no one can handle people using snipers, they should just ban the usage of such rifles to begin with. You can't very well run around and shoot steadily with a sniper or high precision weapon, you'll have to remain stationary.
Personally, I hate snipers in FPS multiplayer, but I can see why they're there and certainly why many use them so I put up with it.
I can't very well expect everyone to play the game excactly like me, now can I?
PS: The AWM in CS is just way overboard and must be the most cowardly weapon (short of the Cerebral Bore in Turok) ever deviced in a shooter. An instant kill when hitting someones toe or hand is just plain silly.