Let me take this thread seriously for a second and throw out a polarized viewpoint.
Countries are the way of the future. Nations provide a lot of backbone for national identity. But in this era of globalization, immigration, etc., the migration of peoples is unstoppable. Anti-immigrant sentiment is a last gasp death rattle of national identity giving way to the inevitability of diverse populations and global migration. It's going to only get more entangled the more people of different races, religions, and ethnic backgrounds keep boinking each other.
The only renewable asset a given nation, or country, has of its people is in its country -- not national -- aspirations. Ideas will win out over bloodlines in time. It's been in progress for decades if not centuries now.