I wonder about this also. Spain has great retirement packages for Americans with a certain amount of income, they can even buy into social healthcare, but is that really in Spain’s interest? It seems like something to be exploited until it’s cut off. Germany’s education makes a bit more sense, given how Unitarian it is, it might be cost effective to charge foreign students low tuition, but even then I’m not really sure.

As a former software engineering expat/migrant worker in China, it all makes more sense for us Americans to work there, we aren’t really gaming the system at that point.