Crazy businessmen

Well, if crazy, at least admirable. I was speaking to a friend of mine who's about to leave his job to concentrate on his business. He had started up a company and it's doing well so he's going to concentrate on running it full time. That's not why I say crazy though, it's more that when he started up the business, instead of funding it through investors, bank loans, etc, he and his friends went for credit card and cashlines. The business was successful and they've paid off all the loans ( $50k worth!), but boy was it crazy! Still, I've got to admire that courage and self-belief!