Well people can certainly move to some extent. Nobody with functional brain considers metropoles to be healthy place to live. People stay there mostly for the m

Well people can certainly move to some extent. Nobody with functional brain considers metropoles to be healthy place to live. People stay there mostly for the money, I know I do and I accept the risks (and working on improving the situation). Moving to mountainous/overall remote regions is relatively cheap. But people like easy life, close work, shopping, services and so on. World is certainly not as binary as you paint it