Why I hate league ranking system.

Your rank and your mmr are 2 different things. Experienced the worst from that in the last 2 seasons. After placements in both seasons, I was climbing really well, and when I got to plat 1 - I was playing against d2's and d3's. Soooo, in order to get out of plat 1, I was playing vs. mid/high diamonds. Logic, where ? If my mmr was so high, then just put me in that rank... why would I need to play like 50-60 more games to get TO THE RANK, WHICH MY MMR IS ALREADY IN. And not only that, when I got to d4-d3, I was literally playing against challengers in series games. Again... where's the logic in that ? to get to d2 I needed to beat challengers. How is that fair ? It just feels like you're grinding 50-60 more games for no reason. Just make it so we play against players in the same rank as you or give massive amounts of LP if you're playing below your true rank. Also, that's why hardstuck thing happens in d5. Your mmr gets so bad but you can't demote and you're stuck getting +12/-24 or some shit. No fun to play at all.