This is another valid point:
But the more striking question is Cuban’s: why a man with as much money as Trump claims to have, presiding over as many successful ventures as Trump claims to own, would stoop to start up a boiler-room business like Trump University, squeezing out revenues from would-be students a few thousand dollars at a time. The fact that he did — even if that decision doesn’t point, as Cuban suggests, to an outright desperation for cash — speaks volumes about Trump’s utter inability to calibrate risk and reward.
Do we want the leader of our country, and the supposed leader of the Free World, to be a man who cannot calculate if a risk is worth taking or not? Who makes decisions on a whim and ego - as witnessed by his overpaying for Eastern Airlines solely so he could have an airline to name after himself - rather than in a thoughtful and deliberate manner? Everything in Trump's background and known history screams unfit for the position of president.