They are all in a world of debauchery that the commoners are only half-aware of, is my suspicion. Sort of like, once you try a single hard drug, you are probably more likely to try more or progressively harder drugs. Once you break the wall of trying one thing you know is terrible, your walls are broken down to making ever-worse decisions.

The nature of dopamine is to want more, newer, novel experiences. If that is driven by sick, psychopathic and unrestrained impulses (the same thing that drove their impulse to conquer business or politics), it will always get progressively worse and more extreme.