[muzani]

I disagree. I've grown up with people from both rich and poor ends. The poor struggle with trying to pay their bills. The rich may be running an operation that makes $20,000 a day, paying $17,000 in daily operating costs. They don't sleep at night, worried about when these costs get too high. While they don't worry about starving, they carry heavy burdens. They can go on more expensive vacations, but they may be too stressed to even start.

And the more power you hold, the more people want it. Competitors, colleagues, employees, spouses and children. I have seen many rich people have their wealth ripped apart with years of family squabbling.

The optimum to tweak for is freedom, not wealth. You want the freedom to not work, but with great power comes great responsibility. The optimum may be a little less than being a millionaire. Billionaires possibly push far beyond the optimum. Many wake at 4, lacking the freedom to have a lazy Sunday or to just diss Zuckerberg on Twitter without it being sensationalized.