My experience with LOL over the last year

I've been playing League of Legends now for just about a year, give or take. I've had quite a variety of experience ranging from euphoric to absolutely awful. I've come to observe a few things about LoL that have led me to my recent decision. These dissensions include my continued participation as a member of the LoL community. Unfortunately, I've decided to stop playing Leauge. I've come to this decision because of a few different problems I have repeatedly encountered and that have caused the experience of the game to become foul. The first of these is the fact that there is a toxic player in more than 2/3 of the games that I play. When I say toxic I mean that the player is either blatantly uncooperative with the rest of the team (i.e. autolock), verbal harassment, negative attitude, and AFK to name a few. These players are much to frequently found in game. It's become overwhelming and not even worth the game play. Why are these players allowed to play after even one offence of this kind of behavior? It fouls the game. There should be a no tolerance policy for this type of behavior. If the rules are broken, appropriate and timely bans should be placed. This way the individual knows what will happen and that it will become increasingly server eventually resulting in a permanent. These players need to be un-assimilated from the rest of the community. This game deserves a better community base. The toxic behavior needs to stop and players need to be punished for it.