Why?

Why do some people who are respected and famous within society think that it is acceptable to abuse their place and use it to their twisted advantage. What makes it even worse is that they hide it and still pretend to the rest of society that nothing is going on. They convince everyone to love them and give them access to even more vulnerable people. It is only when it all comes out that people finally find out what people are really like. All the clips that people used to watch and admire suddenly become sinister and creepy. Why does it have to happen? Why do people abuse their position in society? It needs to be closer regulated and monitored because clearly the current system does not work and never did.