Gene got exactly what he wanted out of the show. The Pediatric AIDs foundation got a big check, he got some attention and some giggles. Once he had both of those bases covered, he saw no reason to stick around anymore. Stump is absolutely right - the downside of this format for the show is that the celebrities don't need to win like normal contestants feel the need to win. Their lives won't be changed by winning, like the life of a person who is a regular joe and gets a job with Trump can be changed. They're there to promote and raise money - not to win.