Auto or no auto?

Lots of people say to use auto, even pro players use it. A top player in V10, pets, said to use auto. He hasnt used pc in 3 days cuz of the feature. I dont wanna use it since its just so unskilled. U just gotta move ur crosshair and wait for the game to shoot for you. Should i start using it again, or keep tryna get better without it?