I'd guess this is due to the million aspects that configure that purposefully abstract 'Quality of life' metric. In the end, it all comes down to: why are thes

I'd guess this is due to the million aspects that configure that purposefully abstract 'Quality of life' metric. In the end, it all comes down to: why are these people, who could do it, not moving from the Netherlands to the UK or US? They are probably 'comfortable' in the Netherlands, whatever that means.