Some people shouldnt play ranked.
For example, I played a game just now where we had a HUGE lead. we got their nexus turrets and we were at their nexus. what does our tryndamere do? he goes top to get their top inhib turret when their nexus turrets were BOTH down, and they were all dead. ofc, tryndamere being a retard decided that an inhibitor turret is more important, so they respawned, killed us in a 5v4 and snowballed like crazy.
It's just ridiculous how some people take ranked like a joke. some people want to win, and then you get teammates like this.