Although I think that, just as 2/3s or 5/8s of squidge-all SUVs never, ever see conditions necessary to shift into 4WD, many of these posters are correct in writing that, for the most part, larger-sized pickup trucks do far more massaging of testosterone than they do heavy- and long distance-hauling,
nevertheless it remains true that especially in the Big Country states, like Texas and Montana and here in Alaska, most pickups much of the time are doing plenty of both. As I've written before, it is the exciting exception for me that I can turn the keys for my current alternative vehicle - a close-to 50mpg TDI Golf - just because I don't need the Heavy Hauler to get to/from town (400 or 600 mile r/t). Without at least an F-250, I'm sunk. And this is also absolutely true for many, many tradespeople who absolutely have to be able to carry large volumes and large weights, often in reasonable or terribly difficult driving conditions, day after day.
So, while total ownership numbers of BigTruckWannabees, as well as those who, as above, need that grunt only a handful of times each year always will far outweigh the rest of us, we still remain a sizable (and more price-inelastic, too.........) community.
Bollar - I also agree that the Sprinter-style platform is absolutely worth strong consideration.