We only have to remember that if we had followed the experience of previous decades, the rise in property prices would have come to an abrupt halt three or four years ago as a result of the economy entering a recession.
The strong influx of refugees to Germany in 2015 even caused the average age of the population in Germany to fall for the first time since reunification: from 44 years and four months to 44 years and three months. Labour force participation will presumably continue to rise in certain age groups.