[lacampbell]

Ironically, of course, the only workable solution to the demographic crises in Europe and Japan is immigration. Otherwise, pension responsibilities will overwhelm the working-age population and the whole society will collapse.

Staving off a demographic crisis using mass migration of middle class people from developing nations is a bit like staving off a petrochemical crisis by fracking or digging up national parks for coal. You're just shifting the problem to another time period and making irreversible changes to your country. It's not at all sustainable.

Global population will peak, so eventually every country will have to come to terms with an ageing population. In many ways, Japan is trail blazer here while the west has its head in the sand.