No, it isn't. There is absolutely no need to have a truck-based, tall monster of a vehicle in even the most serious of winter conditions in the United States. 1: places will close of road conditions are that bad. 2: a front wheel drive with good snow tires is plenty good. 3: if you're that scared of driving in the snow, a subaru impreza with snow tires is small and does quite well in the most extreme stuff.
Although I replied earlier that I've driven a small sports car through most of the last three or so winters, what you said is not always correct. There are many times that the snow is simply too deep for cars, even that Impreza. When you're high centered on snow, you're not going anywhere.
And I have never seen any of the roads around here closed, even when impassable by anything short of a snowmobile or a tractor.