Extremely inefficient and limiting . People will try to argue it , but they ' re just being stubborn and refuse to admit they ' re wrong . I understand that someone that keyboard turns and clicks can be fairly skillful at the game , but my retort is always this If you ' re that good will playing suboptimally , imagine how good you would play if you changed ? which usually gets across to them . My best example would be trying to write with your nondominant hand while not being ambidextrous . While you might be able to practice to get it legible enough , it won ' t be as fast and as clean as writing with your dominant hand . Keyboard turning is simply too slow and involves the eversonoobie s keying which is probably the worst possible movement you can do in the game about 99 % of the time 1 % is the times you legit need to use it . And clicking is also slower than keyboard presses , while slowing down your reaction times . Someone using both hands in tandem to DPS , Tank or Heal will always outplay someone mainly using their mouse only . ESPECIALLY healers , because you have to click frames and then click spells which is just . I can ' t even imagine .