Airstreams run the gamut from "aluminum tents"(Basecamp, Bambi and Caravel) to luxurious 30+ footers. They are easy to tow and you will never tire of looking at them. The aluminum construction may leak for a few unfortunate owners, but the shell will not delaminate or have the rubber roof disintegrate. The corporation generally stands behind their product. Yes, they cost as much as 3 times a stick-built or 1.5 to 2 times a decent fiberglass trailer (Escape or Oliver), but they hold their value and have a longer life IF maintained.
You probably knew all that. The real question is, will your family, pets, and gear fit? Can you live without slides, a fireplace, dishwasher, and outdoor kitchen? Airstreams are definitely geared more to people who are willing to spend time outside their trailer.
If you make to informed decision to purchase the appropriate Airstream, you will not likely regret it.
(That man in that tiny can)
(Same man, Bigger can)