We sold our 2007 Rockwood and bought a 2002 25 ft Airstream two years ago. The Airstream is built much better than the Rockwood and I could easily sell it today for several thousand more than I paid for it.
Our Airstream is designed for a traveling couple more than a camping family of four. We will probably never sell it. Properly maintained, it should last another 30 years before it needs a major overhaul.
I could not afford to buy a new Airstream, but a good used one is very affordable.
I guess we fit the mold previously described. We also own a 1979 30 foot sailboat.