This is like those "what speed do you tow" threads: Those folks going faster than me are dang fools. Those folks going slower than me are idiots...
Lot's of anecdotal, and often irrelevant opinions; Folks stating no one uses their RV's in winter. Flatlanders in Texas who never see a slippery back road. SoCal desert rats who wouldn't think of venturing out in a 2WD. Etc...
You're an idiot of you don't have 4WD. You're a dang fool of you do have 4WD...
If you think you need or simply want 4WD, get it. In reality, it really doesn't materially affect towing capacity, etc. If the slightly reduced fuel mileage, or slightly higher maintenance cost is really a factor, you should probably be driving a Prius...
I happen to own two light pickups, one 2WD & one 4WD. Does that make me an idiot, a fool or a genius?