Well, how about that. We just got back from Anza Borrego Desert Stat Park, where we spent 4 days. And I have definite opinions (surprise?)
Basically, get a trailer.
I've towed a trailer for the past 50 years. If it wasn't a boat, it was a travel trailer. And I've had a pick-up for the same length of tyme. So here's my opinion.
1. If you use a pickup to haul anything, why do you want to buy another truck/motorhome to maintain, depreciate and fight with? An even bigger one than you now own.
2. With a motorhome you also need to buy a car you can tow behind, as mentioned several times above. Another motor to maintain, etc. Also, we explored all the back dirt roads, etc. this week with the truck once we unhitched the trailer. Towing a car requires a lot more than a trailer: brake setup, disconnect this/that, etc.
3. Anything over ~26' has limitations when it comes to jamming it into a state/national/ county park. We have 24', I wanted 20', Judy got 24'. The fewer in your family, the bigger trailer, I guess. We were happy with 16' when we had kids.
4. Trailers are cheap and keep their value. Our present one is 13 years old, and just needs new tyres, which it probably will not get. and I don't feel depressed about the money we've got in that thing when we don't use it.
5. We can haul a lot of "stuff" in the back of the truck when we're towing the trailer. This weekend we took firewood for the group. Cleaned out the front lot and got an atta-boy. A fifth wheel takes up a lot of room in the back of the truck.
6. We have a light aluminum 24' trailer which we can tow with a 6 cyl van/truck. Easier than towing Journey On.
7. If you can tow and launch a C-Dory on a trailer, you've for all the towing and backing skills you need.
Boris