A friend tells the story of his decision to start a company. As most people do when they have a major decision to make, he consulted a trusted advisor. In this case it was his wife. They listed all the reasons for and against and they discussed all the risks. At the end they came to the realization that if it all blew up, they could always do something else. They were not going to starve.
Risk, especially entrepreneurial risk, is relative.