The global consumerist, technological and intellectual mobility prosperity of the past couple generations is not because of the end of the cold war. From 1945 to the mid 2010s the developed world agreed to work together instead of competing and this led to everybody in these countries having reliable access to electricity, food, higher education and durable goods that didn't suck.
This was the first world order. There was never a world order before and instead each year saw dozens of competing small orders. The British empire, Germany, Russia, Persia, Japan, Paraguay etc.
Every (sort of) liberal democracy is aging into mass retirement except Argentina, France, New Zealand and the United States. Germany has 5 boomers for every 3 millenials. Canada has 2 boomers per millenial. Russia has almost no millenials that aren't from ethnic minorities.
Everything is going to fall apart outside of a few lifeboats, and the parts of Europe that are stable are going to be focused on holding the fort.
Twenty years from now the only rocketry will be military. Space exploration will be gone. Most countries won't have access to microchips or the internet. Fusion research will be impossible. On all of these topics, the first world has a deadline.