Growing up my mom lived on one of the biggest hills in a town that was basically all hills. She remembers when it snowed they'd watch all kinds of cars and trucks get stuck trying to make it up that hill, and then watch a guy in a little VW beetle go right up the hill like it was nothing, perfectly happy will of that engine weight right over the rear drive wheels.

Years later I'm a new driver borrowing my parents's cars, a '93 RWD ranger, and a '92 Buick century, and that comparison did a good job of driving home how much difference that weight distribution matters. The ranger had some pretty good grippy tires, but without any weight in the bed, it didn't take much to make those wheels spin. The buick, on the other hand, handled snow beautifully, it had all the weight of that big boat-like front end over those front drive wheels, never once struggled to find traction, the only limiting factor was that it sat pretty low to the ground so it didn't take too much snow before that front end was just trying it's damnedest to plow through snow. If some mad scientist ever thought to lift an old Buick a few inches, I'm pretty confident that 4wd/AWD would become all but obsolete.