I think the real question is, why would you not listen to a GOD Ryze that is hard carrying for you?
Its clearly a booster that is hyper carrying 80% of the games: http://na.op.gg/summoner/userName=heidi135
I tend to empathize with the carry. I'm not sure what his reasons where, but I completely understand the mindset of "I'd rather my team lose because of how infuriatingly unintelligent/unskilled/uncooperative they are". Happens more often in Iron/Bronze/Silver, where these egos get justified by absurd skill disparity.
When people ask why they are stuck bronze its because of stuff like this... when they get matchmade with a free win and manage to piss off the carry (whether or not its justified).
EDIT: I know everyone in the boards (if given a choice) would rather have polite teammates and lose, than toxic teammates and win... I'm just saying try to empathize (if you can) with someone literally 1v9ing getting no respect from those on his back... it gets annoying.