My Reason for never playing LoL ever again.

My reason for never playing League of Legends ever again is the matchmaking system. for ranked for normals it just doesn't matter. Example my last few games I've been paired with people who are decent but then something makes them mad they rage and the spiral of downward defeat begins, ultimately leading to not only a un-fun experience but a loss which adds to the misery. the games I do win generally i have players on my team that know their roles and how to play them, but the other team usually has 1-2 that don't to make it even more of a one sided game. then theirs times when one player ruins the entire game for 4 other players. I had a game recently with 2 platinum's me former silver a unranked and a bronze 5... needless to say the B5 completely ruined the game and would blame team mates even tho he had 16 deaths at the end.(he also begged to mid yasuo, then went support yasuo). The matchmaking system seems to think 4 good players lets have them carry this one bad player, or 2 decent once semi decent and a bad player. and if roles mattered as much as their said to then the matchmaking def is broken because if you don't get your role or someone who only knows one char in one role has to play something else and cant. the worst part is a new role makes them play differently and not in good ways especially in lower tiers they just dive or roam alone finding the other team and getting murdered. basically the system feels very designed to specifically make you lose purposefully. yes you get wins and losses but the amount of close games to one sided games is extremely far and even fewer in between. This particularly effects ranked even more cause good players and their are good players a lot in silver get stuck there because of the systems matchmaking. the only way out is to duo que with someone you know will win their lane and others lanes because they usually wont. Now i know a lot of the stuff riot says that helps win like no negativity playing you role etc. just seems to be propaganda of sorts to influence the player base into believing they are the reason for the loss when in all honesty the matchmaking plays the biggest role in the outcome of matches. Games predetermined before champions are even visible. fun right? no.. not fun...

Edit: This has nothing to do with this season alone. I have been playing since season 3, the middle of it. i have 2 accounts even, and its not even slightly different from account to account. I play the spectrum of the roles even from support to top to jungle with no difference in the skill of how im matched with other players for normals and ranked.