well its mostly the players whos thought process of multiplayer believes that if your not blowing something up at least every 5 seconds, you must be doing something wrong. look at quickscoping; not exactly the tactic i think of when i hear 'sniper rifle', but its the fast and frantic tactic that the sniper can be used for; the more realistic (and what should be most viable) tactic of training your sights on a target until youve 'locked on' so to speak doesnt mesh with the pace most people play at. thats why they hate camping; its not a tactic they believe has a place in the game.