Think I'm done..again

something is seriously wrong if every match has someone berating another. I was practically sick to my stomach last match because I just wanted to have a fun game and instead, enemy yasuo decided to be a troll which set off my Pantheon and eventually the rest of my team so the chat was filled with arguing nonsense and no one would pay attention to what was going on. Pinging mid to grab blue so the enemy doesn't? Too busy arguing with Yasuo. I ended up leaving, the match was a lost cause and I felt I could have a better time elsewhere. I get that I'm sort of part of the toxicity for leaving (which I RARELY do), but it was getting to be too much and I didn't need the stress. Muting doesn't work because even though I was pinging for assistance and all, my team was still arguing therefore even if I had muted everyone, the match was still being ruined by nonsense. If this game seriously doesn't shape up, I fear it will only have a small few years left. For now, I'll move onto DOTA (which also has a toxic community, but nowhere near as bad as LoL) and Heroes of the Storm (when that releases). Please, I love this game and spent so much fun time playing. It's really sad to see it go down hill. Not only is the community ruining the game, but the forced meta makes every match feel the same.

Well, good luck to those of you who still enjoy and play the game. My time here is done for now, I just don't need the stress. Why does such a fun genre have to entice such negative behavior? It's really sad.

EDIT: Before anyone asks, it wasn't playful banter you'd expect in a competitive game. It was more harassment than playful.