This is the usual demographic problem. However, the problem is bigger on the military end - you can't defend your interests if 1) you don't have the money 2) if you don't have the manpower.<p>However, the back to the problem with taxing jobs out of existence: fortune is on youths side. As bad as the problem may sound, once the problem hits criticality, you get a sudden societal upheaval and things right itself immediately. No one should count on their pensions as being forever.