Bots, Bots Everywhere (and seemingly nothing being done about them)
I realize this is kind of a small matter to complain about, but it's annoying nonetheless. While leveling my EUW and other NA account I have encountered SO MANY bots. They're clearly bots as they only use the same keywords over and over ("Frozen", "Gj", "Push", and my favorite "WTF") while simultaneously just walking down lanes autoing the other bots all the way to the turret. Winning against other bots with these guys on your team isn't really an issue because.. well.. they're bots, but that isn't the point. I've reported these bots on every sighting with a very detailed write-in on each of them and have yet to receive feedback on even one of them. So is botting just okay now or what? These accounts are obviously for other things that would break the ToS so why is nothing being done about them when they're served up to you on a silver platter.
TL;DR bots are inherently anti-fun and can seriously hinder the ability of new players to learn the game, yet they are not punished.