Like me, these folks want to leave a more expensive country for a cheaper one. Many of these are retirees who, like myself, simply can’t afford to retire comfortably in their native land and don’t want to work until they drop.
There are also many economic escapists who are still of working age, but want to pursue a career or vocation they might not be able to live on at home, but could afford in a less expensive country. Or perhaps they love what they do, but want to be able to spend fewer hours doing it.
Idealists who work for non-profit organizations might fit into this category. So would those who believe there is more to life than work, and who feel they can better raise a family and have time for important activities outside of work, in a country where the cost of living is lower and the pace of life is slower.