[csharpminor]

A government’s source of revenue is working age taxpayers. Its biggest cost is the social safety net for the elderly. It seems natural for them to care about population growth? Where would they get the money for UBI if their tax base is contracting every year?

Immigrants (at the scale Spain needs) don’t want to move to a shrinking economy. Spaniards themselves are leaving the country to look for work. As an example, Central American immigrants will immigrate through multiple low growth countries specifically to get to the U.S. for work.

To GP’s point though, I think Spain’s population problems aren’t all that related to dense apartments and more tied to economic opportunities.

[anthk]

Living in Spain it's far easier than in the US. We already speak Spanish, and knowing the jargon from Spain it's just a matter of literal weeks.

Also, the healthcare options, the lack of violence even at night (relatively, every city has its 'bad zones' but even with that it's far safer) and the welfare state makes their lives a paradise compared to, for instance, a hell zone in the Dominican Republic or narcozones in Mexico.