I would rather spend an extra 5 minutes in Queue and get one of my roles...
than get Auto-filled to a role I don't want (like ADC) and have to spend 30-60 minutes being miserable and dragging my team down. I don't see the point in Auto-Fill, if I wanted to get forced into the role no one wants I would just play Blind Pick and be unhappy. However I didn't pick Blind Pick because it is terrible, so I would prefer getting the roles I want so I can play/practice champions of MY choice. Besides most of the time someone dodges because they don't like the role they were auto-filled. This morning I had like 6 dodges in a row and my Queue ended up taking 35 minutes... because of Auto-fill... so in my case Auto-fill extended my Queue time then forced me into my least favorite role. I am not seeing how this is suppose to improve my game?
Btw I regularly pick Fill, because I don't know what I want to play and I want to quickly get into a game. So I don't have a problem playing a random role when it is my choice, however I have a problem with wanting to play one of 2 roles and instead being forced against my will into another role with my only options being "be miserable for 45+ minuntes or dodge and wait another 10+minutes hoping you get your role"... yea guess which option is better... although i don't ever dodge, so i am just miserable, but for majority of people the second option is what they take.