Also, it has been shown that CEO's display significant psychopathic tendencies. It's not like, great I've got a payrise, i can now take my family on a holiday. It's more like proving yourself, money only boosts what you think OTHERS will think of you, you probably have no real idea of the true value of your salary. Look at what most billionaires do, they get some nice toys, but they don't generally retire to enjoy the toys to the fullest, they work and work; power and power. It becomes all about the control and power and the money is the fuel, not the reward.
It's bizarre!