Last time the United States were undisputed champion on living conditions in 1970s. Today barely in top ten. A plenty of nations has better wages and infrastructure and Norway with all its downsides considered is certainly one of these. For the Norwegian to emigrate is like for an American to move to Mexico.
The US has demographic realities Norway does not...yet. The US has been importing 3rd world cultural vibrancy since 1965, so we have a bit of head start down the path which Europe has chosen to follow.