More and more people are doing work they find fulfilling and interesting. They like what they do. And if they don't, they can find something that they DO enjoy. Better health and longevity will contribute to a longer period of productivity. In addition, retirement-aged people will be able to continue working because their work doesn't require as much physical labor as it once did.
Commerce creates wealth.
Our gross national product will continue to rise at a rate unprecedented in any economy. I'm an optimist. Always have been. With everything I know and believe, I think we are in for the greatest boom times the world has ever experienced. My oldestt son told me recently that he was saving 10 percent of everything he earned.