I used to say the same thing but then I discovered that people in places of power and authority have higher degrees of psychopathological traits than average. The more powerful the position, the more psychopathy that person exhibits.This man is going to be 73 this year.
Why don't politicians just retire is a question I ask myself on the regular. Go enjoy life with your children or something.
The average policeman, lawyer, surgeon, politician, military officer, CEO and above all politicians, are all highly psychopathological.
This is an inevitabel process and present throughout the entire human history with some very rare exceptions.
If you want to read upon this then I recommend you the work of Dutton.