I devote most of my competitive energy to Rocket League for this reason. Games are only 5 minutes long and you can actually solo carry. Also you don't have to re learn the game every 3 months when a balance patch hits.

edit: I know what you mean. A great League game makes it all worth it, but those seem to be maybe 10% of the games and the other 90% you are just trying to be a kindergarten teacher trying to keep everyone from going afk.