League of Legends. How to stop?

I stopped once I realized I get more frustrated during ranked games than actually having fun. Games are for fun, mostly anyways. Yes, even when it is competitive. When you win by stomping the other team, it isn't fun. When you lose by unfair situations, it isn't fun.

Basically, 8/10 games in ranked play aren't fair at all. Whether you win or lose. So why continue?