In the 90s when boo.com imploded (you might not remember them but they were huge) my company wanted to hire some of them. I prevailed against it then. Boo collapsed because they partied their way through their investor's money. Regardless of any other skills, they all had a spectactularly poor attitude to other people's money. You don't want that kind of culture to take root in an organization.
EDIT: Downvoters, do you really not think that a person's personal ethics can be judged from the work they choose to do?