Konkon, it is not reasonable to make economic forecasts 20 years into the future.
However, following general trends, one can be assured that things are going to be worse than their are now, for the West at least. That is absolutely guaranteed. By 2030, Europe will most likely be a conflict-ridden mess similar to the middle-east. North America will be similar. As for Australia, the nation-less nation, becoming a Chinese protectorate would not be surprising.
Leave to future till the future, just make sure you are moving your own personal self in the right direction. 'Tis all you can do.
Worse with more ongoing but socially, economically and governmentally acceptable debt. The bar will be raised some more and no longer being able to pay debts with revenue of some kind (but more debt) will be the norm; it's already happening.
I think it's ok to speculate about the next couple of decades. I think we need to, to keep up with others that are already doing this. They may not share their views with the rest of us. Very few people saw the Nazis as a real threat in Europe and around the world in 1933, however, in England, Churchill did and warned the British etc about likely and almost inevitable events, but very few listened at the time and took him seriously. Not saying we are faced with these sorts of problems, but it doesn't hurt to share thoughts about what our opinions are on future events.