For certain automatic guns, it is helpful and useful. But at the same time it has its disadvantages because your enemies will be shooting faster than you are in most cases which means they land more bullets on you quicker. It's all about personal preference. If you're a good player and know how to maneuver well/get out of situations that seem impossible then it can be useful, otherwise I'd leave it off on auto guns. Me for example, I always have kids yelling at me because I move around all the time and am able to dodge shots well while unloading my clip into someone without missing too many shots. My K/D Ratio is almost a 2.0 for a reason. I'm at around a 1.8 something now, but last month or the month before that I was well above a 2.0