I've been on the uninstall/install cycle. I used to be very much into League, and plenty of games before that. I stopped on January 1st 2015 as part of my new year's resolution.

I knew I had to stop because it wasn't giving me time to achieve my goals. Specifically, to become a proficient programmer. I think this contributed greatly because the sensation of achieving little wins while playing games was immediately replaced by the same feeling when fixing bugs or having code behave just like you want it to. See: 'The Power of Habit'.