If there are only a couple hundred serious angels in the Valley, then by deciding to become one you could single-handedly make the pipeline for startups in Silicon Valley significantly wider. That is kind of mind-blowing.
Wow. Mind blowing, but a great insight. I'm really amazed at how few Angels there are, and what a huge disproportionate influence they have on the world economy.
Personally, I think that angel investing would be an absolute blast. Just got to get that, "rich" bit figured out so I can start doing angel investing. :)