Ranked game Rant.

I play support because everyone and their mom wants to play mid, which is fine. I don't care. Take the role you want as long as you're good but the people who call mid as their pref role then this happens... Makes me sick of this game. Ranked is 'Skill' but how does skill account into Ranked when their is someone who just feeds or doesn't understand their role enough to win.... Both Games I got my team first blood and then the mid laner just derps and loses all three turrets in a matter of seconds and feeds their lane to point of no return. Gaaaaaahhh!