Hmmm... I hang around with two distinct groups of people a lot: grad student types with essentially no money and young professionals (doctors, lawyers, etc) wi

Hmmm... I hang around with two distinct groups of people a lot: grad student types with essentially no money and young professionals (doctors, lawyers, etc) with nice, solid salaries. From my experience, it's much easier to not spend money when I hang out with the first group, because they have no expectation of spending a lot of money. On the other hand, you'd feel out of place with the other group if you don't spend some higher base level for doing "normal" things like going out to eat, trip to Vegas, whatever. I assume this scales if you are just the millionaire and you hang out with multimillionaires.