Each was despicable in his own way(s) that history has detailed in great measure in countless words, books, stories and headlines over the decades. History has given us other despots that have ruled similarly throughout the world.
We manage to skewer our libidinous politicians before they get into the White House, not after. (Bill Clinton was the one exception.) And when did we ever have an unmarried president? It seems bachelors simply don't qualify for our highest office.