I don't know what I'd do with the investment income from the next level of wealth. The conspicuous consumption (for instance) of flying by timeshare on a private jet instead of on a regular scheduled flight would just attract problems in my life. People can smell money from a mile away if you don't keep your head down.

I am at Grübel's level of rich. I am healthy, have no dependents and own my own time. I enjoy taking a walk in the park on a Tuesday afternoon because I want to. The afternoon meetings I had to attend in Silicon Valley were the worst.

I saw a sign once that said, "My hope is to die in a staff meeting: that way, the transition from life to death will be subtle." I understood the sentiment 100%.

Even by Silicon Valley terms, I had a great income and a good career. But I will never return to it.