UN List of Most Livable Countries, Top Six
Now, look at that. These nations have an population growth rates under 0.5. They have lilly white populations, with the exception of Australia, and one city (Toronto) in Canada. (And the non-white Ozzies and Torontons are mostly from east or south Asia, plus a few Aboriginals or First People or whatever it is politically correct to call the folks who escaped the colonial genocide).
And, their average population density is less than 50 people per square mile. Three of these countries, Iceland, Australia, and Canada, have population densities under 10 per square mile.
So, if by "livable," you mean "I'm looking for a few rich white people," this list makes sense.