That great quality of life comes largely from a monoculture focused on group harmony and letting those who don't jive with the culture falling through the crack

That great quality of life comes largely from a monoculture focused on group harmony and letting those who don't jive with the culture falling through the cracks. Maybe a bit controversial, but I don't think mass importing foreigners who won't mix with the culture will be good for the country in the long term. The U.K and Germany are full of internal strife entirely through their unchecked mass importation of foreigners and refugees. It needs to be done in a controlled manner allowing the foreigners to integrate with the culture, bringing amount small changes over time rather than drastic cultural changes quickly. The foreigners and tourists are always the most obnoxious and least friendly people I interact with while in Japan.