What do YOU think is the worst thing about League of Legends?

So let's be honest: this game is far from perfect, and it probably never will be. But there are some things that might just drive you INSANE, so I figured I'd leave this here as a sort of therapy. Scream, shout, rage all you want, or just have a nice chat. Let it all out.

For me, it has to be the fact that for every nice/funny/respectful person you see in a game, you know there will be another 10 people (minimum) who will be arrogant, toxic, selfish bothers that just ruin not only the game but your whole day.