Mind-set and Life-style choices Millennials have made, draw them into jobs that are: service, low responsibility, and low participation. And these jobs occur now in the Lower Middle class. That leaves a vacuum in the Upper Middle class. There are three sources (that I know of) to replace that population. I don't know if this is intelligent design, the free-market, or fortunate serendipity. Those sources are: - America's poor and working poor (the...