In 20 years the world will have changed a lot more than in the previous 20.
There will be fewer currencies and several countries will have gone through "Revolutions" - some peaceful some not. There will have been wars and rumors of wars. Arabs will be killing Jews, and Jews will be killing Arabs. Religion in general will either be gone the way of the DoDo bird, or a larger part of everyday life like it was in the early 19th and 20th century. (I canít decide which way it will go, but it will go one way or the other).
There will have been more gun restrictions in the USA. However I donít think that gun ownership will be totally banned. But possibly as restrictive as the UK, Australia, or Canada.
NRA & NAHC Life Member