Ya know what? I may have just figured out WHY FE'ers do it. They are trying to get a free trip into orbit to see for themselves! It's the perfect ploy. They get the ride of a lifetime in return for denouncing something they never really believed anyway. Why didn't I think of this sooner? I can't be the first one to come up with this one... no way.
Why would I need to go into orbit when I can see just fine right here?
Another member of the crew could take a photo of you in zero gravity holding a copy of Earth Not a Globe by Stanley Birley Rowbotham.
You'd get some kudos out of that.