Also different cultures can withstand different level of hardships. With population decline what kind of quality of life drop we are talking about? Even if peop

Also different cultures can withstand different level of hardships. With population decline what kind of quality of life drop we are talking about? Even if people get 2 times poorer, it is still way above than whatever people had in old times. That level can easily drop way further and people can adapt. I think it is even better to not have immigration as a solution, because it accelerates this whole problem and forces the society to search for other ways to solve the issue.