I don't think it's necessarily a reason to be leaving, for example I've lately dedicated a lot more time into league than CS gaming hours wise, being a platinum league player, but yet i am able to schedule my time to work for ambrosia, spend time with gf and friends and even learn.
I don't see all the hassle and issues with having to leave only cause, now you don't play cs that much anymore, but whatevs. Your call.