Serial entrepreneurship is not for everyone. Once you've put in nearly every waking hour of 5-10 years of your life into building a company, it is easy to see why doing that all over again may not be all that appealing. Especially once you've got a family and other competing commitments.

However, many entrepreneurs still want to help create and bring new and exciting things into the world. Becoming a VC is one relatively low-stress way of doing this. It is also a way of "giving back to the community".

The few ex-entrepreneur VCs I know have been amazingly helpful, and frankly I don't think any of them are in it for the money - they have quite enough already.