Get rid of autofill
I hate playing support. It's boring. I don't care if it "makes me a better player" or any of that, I genuinely DON'T HAVE FUN for the 35 minutes I'm stuck playing as a support. I want to farm, kill opponents, actually do damage, etc. I would rather wait 15 minutes for a game where I'm guaranteed not to be stuck to the support role.
Also, sorry to say but when I do get autofilled to support I play MY WAY. That means Shaco, Nidalee, full AD Alistar, and no sightstone. Why? Because I want to have fun and Riot takes that away from me. And my personal enjoyment is more important that me winning the game.
So blame Riot. Not me.