Rich can live better than poor but they cannot live without poor.
In another thirty to fifty years, the demand for cheap labor will have produced even more machines over the employment of actual humans. And in that time frame, humans will have lost their voice, their power, all freedoms, and all worth. It is inevitable that machines will one day become the ultimate enemies of mankind. We are not evolving or progressing with our technology, only regressing. Technology is our friend today, but will be our enemy in the future.
America isn't breaking apart at the seams. The American dream isn't dying. Our new racial and ethnic complexion hasn't triggered massive outbreaks of intolerance. Our generations aren't at each other's throats. They're living more interdependently than at any time in recent memory, because that turns out to be a good coping strategy in hard times. Our nation faces huge challenges, no doubt. So do the rest of the world's aging economic powers. If you had to pick a nation with the right stuff to ride out the coming demographic storm, you'd be crazy not to choose America, warts and all.