We had a good time, but we would never rent an RV again and buying one is out of the question. The worst part was realizing you probably couldn't park the thing where you wanted to go, like downtown Asheville, North Carolina in the arts district. We ended up renting a car and driving that around and left the RV at the campground.
When you added up all of the costs - the rental, the rental car, the campground fees, the huge fuel bill, the camping gear we needed to bring - it turned out that the per-day expense of the RV was higher than the highest we've ever paid for a VRBO house rental and we've stayed in some pretty nice places.
In the end, you're still camping, it's just that you have four walls, a roof and some amount of mobility. Wife kitteh likes camping, but I'm not much of a fan even under the best of circumstances.
Meanwhile, for your viewing pleasure, here's eastern Tennessee at 200 MPH. Enjoy.