not the parent but Airstream or any other RV with an aluminum or molded fibreglass body.

most RVs have thin skins glued to a type of particle board and right angle joins everywhere. those joins will leak and when they do, the leak is often imperceptible. the interior walls and subfloor will rot before you notice anything's wrong.

RVs with a molded fibreglass or aluminum body use overlapping panels to naturally shed water and the materials used don't corrode (caveats apply, eg galvanic corrosion of aluminum). generally this means the RV won't rot out unless the panels themselves are holed, which is unlikely. it's not uncommon to see an Airstream that's been sitting in a PNW field for 30 years and find that the interior is musty and likely mouse chewed but structurally fine.

of course the mechanicals -- frame, axles, gas lines, appliances -- all need to be maintained and they are more expensive compared to their non-RV counterparts, but if you're handy and aware of your limits, these don't have to be show stoppers.

Supposedly Airstream was sold to one of the RV Giants and quality has been deteriorating.

Basically an RV made by the smaller, newer companies that you've never heard of and have to do some research to find, are building quality stuff.

Liz Amazing is selling a PDF of recommendations that she put together from comments by people. (For $100, was 50% off, the 40%, now 25% off).