I’ve witnessed a generation of striving entrepreneurs join the three-comma club and instantly transform into superheroes of the global order, celebrated from the Bay Area to Beijing for what’s taken to be their obvious and irrefutable wisdom about anything and everything. We put billionaires on magazine covers, speculate about their political ambitions, praise their grand visions to save the world and wink affectionately at their wacky plans to help us escape — thanks to their very huge and not-in-any-way-Freudianly-suggestive rockets — to a new one.But the adulation we heap upon billionaires obscures the plain moral quandary at the center of their wealth: Why should anyone have a billion dollars, why should anyone be proud to brandish their billions, when there is so much suffering in the world?