..Initially, I was not a fan of full body paint, did not want it when we first started looking at Motorhomes. Adds a bunch to the price, makes it harder to keep cool inside, yada yada yada.
Then, we saw a few MHs that were several years old, that had the vinyl decals and were not full paint. Many of them did not look good, showed their age significantly. Those decals just do not last. Coaches the same age that were full body paint? Well, they still looked like brand new almost. Resale value with full painted coaches is substantially better for that reason.
Anyway, seeing various coaches with and without full paint after they'd aged several years, was enough to convince me we wanted full paint! I'm very glad we went that route, too (see signature). Love the way it looks, and the fact there are no decals on it that will wear out and peel off. Definitely helps resale value a lot, and the way these things depreciate, you need every advantage you can get when it comes to resale value, haha. :)
I was a little concerned about cooling, until I learned that many full paint coaches (including ours), the entire roof is white. This helps it 'reflect' heat and not absorb so much. As hot as it gets here in the South, I would not want a full body coach if the roof wasn't white.
There is one draw-back I've found to full body paint, though, that I had not thought of: Yes, it looks very cool, but it also looks like $$$ (makes coach look like its worth a lot of $$ whether it is or not). People see it in our driveway and automatically think we are loaded with $$. Any time we have a contractor over at the house to provide estimates for various landscaping projects, we have to hide the MH somewhere else. If we don't, amazingly, their estimates sky-rocket as soon as they see the MH in the driveway, hahahaha! :)