But even with those ideals in play, why would a millionaire start gambling in the first place?
Because no man stops chasing for money, if the rich do then they will still investing and will withdraw all the liquidity they have and go back to zero level but they can't do that because they need to maintain and sustain their status.
so why would a rich athlete or politician become so addictive to gambling?
It is a way of life for them, they have fun that way. If you have a way you get your fun you still see yourself running back to it.
I think socialization+joy+drinking+gambling is satisfaction to them. What do you think?
Well in life you need to follow your heart where it is happy. Do what makes you happy in moderation so that it doesn't also infringe on another person's happiness.