I am Norwegian myself but when I lived in the US I was always puzzled by the extremely segmented feel of cities. Everything in one area was the same, and when you meet people you get the feeling that most people only know people from their own economic class.
As a country that prides itself on diversity, there doesn’t seem to be much diversity where people live.
I think cities with less rules which are able to grow more organically will tend to develop better.
Or I guess it depends on the type of planning. Where I live in Oslo a lot of thought went into making it possible for kids to walk to school, playgrounds etc without crossing car roads or walking next to car roads.