Enough Money means what? Everyone wants money to get better. But people can't know how much money they really want for him or her. Really I don't know why they need more money when they need 5 essential things like food, clothing, shelter, health, and education. I hope all of the people agree with me but also I can say that money needs for power. If someone holds much money for that he reaches the pick of power.
These types of people aren't happy to get a poor amount of money.
The reason they said human want us insatiable is not far from not knowing what will be of satisfaction because that which they want today if gotten can increase there want and need, even when shelters, clothes and food is there others thing that will attract you for more money will still come up example some are even looking for means to find another planet where live exist and travel to, although this may be relative but to human nature in general no money is enough one level of money can increase another level of demand for money so it continues to infinity.