I lived in NZ (mostly Christchurch) for about a year, and I think your characterization is way too general. NZ has a similar population to Colorado (where I now live) and a similar land area. It is far away from where my family lives (and hence I am not still there), but "crushing" "isolation" it is not.

Kiwis are some of the warmest folks I have ever met. When my wife and I arrived at the airport our friends had forgotten which day we were arriving and had a 3 hour drive to get to us. The random woman who's phone we borrowed proceeded to argue with our friends over the phone about who's house we would stay at that night.

We saw similar hospitality everywhere we went. Its a stark contrast to the US.