I suspect that for a lot of people it's more fun to make the money than to spend it. Some people (like myself) would rather try to do hard things and fail than

I suspect that for a lot of people it's more fun to make the money than to spend it. Some people (like myself) would rather try to do hard things and fail than to never try at all. If you do this enough times, eventually you get lucky. Once you eventually find yourself with money, the novelty wears off quickly and you realize you want to get back to building and creating things. This is probably part of the reason why many people who get windfalls (lottery, inheritance, etc) spend all the money and wind up broke again. Easy come, easy go.