They're just regular fuck-ups like us, but with obscene amounts of money.
They're much worse than regular people.
Having money, fame or power causes changes in the human brain that reduces the ability to perform empathy. The rich are always at least a little more evil than normal people and if any one of us becomes rich, we'd also be a worse human.
That said, humans fuck and sanctity of marriage is made up nonsense. To paraphrase principal Skinner: No, it's the monogamy that's wrong.