"Donald Trump announced that his family will not live in the White House when he is inaugurated, has implications for all of us. Who will pay for the security required for Trump's New York-based family? Who will bear the costs of the disruptions caused by frequent presidential flights to and from New York, not to mention the motorcades in and out of midtown Manhattan? The answer is: taxpayers or, as we used to be called, the public.The hidden costs of opting out becomes OUR problem. If the well-to-do do not use the public school system, the community is deprived of their energies and contributions. If they do not use city roads and sewage, they come to resent having to pay for the upkeep of infrastructure that others rely on. If fewer and fewer children take the school bus, it soon becomes an added expense to the public purse that cannot be justified...