Can someone explain how this is remotely fair?
Two examples:
I play a game, fail at everything miserably, losing my lane and feeding, performing horribly in teamfights and accomplishing absolutely nothing for my team, but due to them being extremely good players we win anyway. I "won" so my ranking goes up accordingly, but why? I did absolutely nothing right this game. How can it make sense to increase my ranking when I didn't help my team win in the least?
Ok, new scenario, I play a game, win my lane massively, help other lanes successfully, and take several objectives. Everyone else on the team argues, insults each other and feeds the entire game, refusing to listen or to help, and gets the inevitable loss because one man cannot win a 5v5 game under realistic circumstances. If I had a nearly perfect game and tried to stop the in-team fighting as much as I can, why do I lose ranking just as much as the rest of the team?
Added: Sorry if you posted in my last one, it was deleted and I may have missed it since Riot won't simply move posts where they want them :(