Being able to relocate quickly and relatively painlessly would be a distinct advantage for many in the current economy, I’d think. It would open up a whole lot more opportunity for employment.
Not to mention, being able to relocate when the undesirables move into the neighborhood!
This must seem especially attractive to childless young people (who don’t have to worry about uprooting children and moving them from school to school); it also works for people that don’t want to watch their neighborhood change for the worse when they still have 20 years left on a mortgage.