Some problems with this approach:
1. "Oh please. If this kind of "freedom" is important to you, then have you also sworn off commercial aviation, gotten a pilot's license, and purchased a Learjet" This assumes one can afford a Learjet. Lots of people can afford a truck, even if they only use it a few times per year. Most people cannot afford a Learjet. Most people, however, are willing to spend some extra money for some extra freedom and time savings.
2. "That's the whole reason we have places that rent cars, trucks, tow/hauling equipment, industrial equipment, etc" So if one plans a weekend trip to the state park, one should spend half of that time driving 100 miles to the nearest rental business, renting a truck, drive it 100 miles back home, picking up the camper, and then driving 50 miles to the park so he can enjoy the 1/2 of his weekend that remains?
3. "An even better solution is not dragging a crappy hotel room around on wheels, and simply renting a permanently-built hotel room at a hotel." Hotels are not generally built in the remote parts of the wilderness where people like to take campers. One could find a hotel nearby, but then half the weekend is lost in transit.
I think the problem all comes down to time. If I have a camper and a truck, I can spend more of my precious weekend actually relaxing in the woods, and less time filing out rental agreements.