League of Legends can be fun but only if the community of people take the game "seriously" and not mess around. However, Riot doesn't care to work and filter the garbage players from the decent players who actually care and try to win the games.
Instead, Riot and parent company, only care to make money. And so they don't care if people are bad and they ruin the game for everyone else, as long as they buy things and keep things going. Instead of punishing people how just mess around in the game, they punish the players that try hard and get mad at the players who don't.
My friends and I quit playing League about eight months ago. I personally, couldn't stand the community and I couldn't stand Riot not doing anything about it but instead punishing me for calling someone, who is intentionally feeding, an "idiot".