Other players are using them to control how fast my character moves or how much damage I do. It's basically playing God. I feel like a puppet on a string being controlled by other players.
Also when DPS do crappy damage it keeps me in instances longer. That's trapping me in an instance, forcing my character to spend longer in a place against her will. It's legally kidnapping. DPS rotations should be reduced to 1111111111111 so they can't play badly and negatively affect everyone else's game.
Discuss.