Good post! I always tell people if they really want to make money, go work on Wall Street. Doing a startup is quite a bit riskier. For me, it's really about doing something meaningful that I enjoy. Here's a tip I read that I really like, two things you might want to ask yourself before doing a startup: a) if you're rich already, would you still do this? And b) if you can't fail at what you do, what would you do.
http://yana.com/tips/80