$100M now? Some people are apparently harder to please than the sage and former governor of California:<p>&quot;Money doesn&#x27;t make you happy. I now have $50 million but I was just as happy when I had $48 million.&quot; - Arnold Schwarzenegger<p>This is, of course, a joke, but there is clearly a couple thresholds that are decisive: the first around the point of &quot;no longer need to work <i>immediately</i>&quot; and the second at &quot;no longer need to work at all if one is willing to have a modest retirement&quot;. I suspect that if one is sort of person who thinks that $20M or $100M is a important further threshold for some calculation (&quot;all of my descendants will be able to go to college, for the next 12 generations&quot; or &quot;I need to be able to buy anything that I can current conceive of wanting&quot;) there&#x27;s probably no real end to it.