Satisfaction with life does not depend on how many things you can afford to buy. Look at the millionaires who have everything. They do not feel satisfaction and therefore go into politics or are engaged in extreme sports.
You are right, contentment is not a satisfaction on what you have, or what things you got, and I think why some millionaires now goes to politics is that they want to help and inspire other people' lives. For me, It is what you do for others than what you do with yourself. I guess all those million dollar stuff won't bring you to contentment for long, try to help other people, maybe it will take you there.