Autofill in ranked
Autofill in normal makes sense, because it decreases queue times and its a normal, but why do I need to play with a 35% winrate MF adc, when I can be playing with him as a 48% winrate garen. Why do I need to play with players out of their comfort zone in RANKED? I honestly don't care if I have to wait 4-10 extra minutes as long as I'm not going to be wasting 30+ minutes with a -13 lp at the end.
Is there any valid reason as to why auto fill exists in ranked, other than "muh queue times"?