The GINI coefficient isn't a particularly good metric because there is no real reason to believe that an unequal distribution of wealth is an undesirable outcome. Consider that a country where the bottom 20% earned $30,000 to $60,000 per year and the top 20% earned $1,000,000 (or more) would have a fairly unequal distribution of wealth, but everyone would still be better off than they would be if the bottom 20% earned $10,000 to $20,000 per year and the top 20% earned $50,000 to $60,000 per year (which is a far more equal distribution).
Now, the real goal of an individual should be to maximize their wealth and the wealth of society in general (at the fastest rate possible). Now, under the current economic system in the western world maximizing your own wealth is the same as maximizing the wealth of society being that our economy could best be described as a flow through system ... No one holds much (real) money for any period of time and practically every dollar someone earns is immediately spent on goods, services or investments which become someone else's income.
