I'm a regular participant on 'Bogleheads' forum. If forum posters are to believed, there are quite a few high net-worth individuals there.

Many are motivated by 'the game'. But I am not depressed by this. On the contrary, it seems to me that most take care to use their money in constructive ways. They seek to find ways to build better futures for those that will follow them. Some even pledge to give a bunch of it away, after the great examples set by Bill Gates and Warren Buffet.

There are some bad apples, probably, but I think there are a lot more good ones.