Again, I would venture to say that the winters in Northwestern Montana in the late 1950s were just as bad as any in NoDak. My car back then was a 1941 Buick Special fastback sedan. I was in the National Guard then, and our drills were once a week. I never missed a drill due to weather, all winter long. I lived 25 miles from the armory.
However, my parents did get trapped just outside Bad Rock Canyon on U.S. Hwy 2 once by a blizzard. They spent three days there. A 4X4 would have done them no good at all! My step father worked in the woods as a tree faller. Never owned a four wheel drive, never regretted not having one.
If you want a 4X4, go get one. As I said, I have two of them. BUT, when I needed a truck to tow a 32 foot triple slide fifth wheel, I got a 4X2. It did the job quite well!