I'm not downplaying snow tires. I know that they work.
I'm not nearly as experienced driving in the snow as some - I've only been doing it 20 years. Most of my years were in/around southern Montgomery County. Better part of 5 years in Evansville (where people DO NOT KNOW HOW TO DRIVE IN SNOWY / ICY CONDITIONS) and on the south side of Indy since August of 2001.
I've only ever driven front-wheel-drive vehicles. I have only ever been stuck on a road/street once in my time driving. One other time I got stuck was in my un-shoveled drive way when I was 19 or so. Snow packed up under the lower engine cover just enough to keep the tires from having any purchase. The other time I got stuck it was in a residential 'hood north of Murphy's Landing. Unplowed after 6-7 hours of steady snowfall. Had to stop to drop someone off at home. If I would've been able to keep going, I'd have been just fine.
Where I've lived - I've certainly never "needed" snow tires. As long as my regular tires have been and are in good condition - I don't think that the vast majority of Hoosiers need them.
I know that folks further south of Columbus seem to get more ice than those north. I'm not sure how much snow tires would help on ice as it is.
Blizzard conditions as we had in central IN last winter - snow tires or not - most cars weren't going anywhere anyhow until the streets were plowed.
My own personal opinion is that the overwhelming majority of folks in Indiana just don't need snow tires. Better tires - sure - but not snow tires.
No people don't need snow tires, but some people don't need a scope to hit a target at 200 yards either. Having a nice scope will make it easier if you know what your doing. Having a nice set of snow tires will make it easier if you know how to drive.