What does 60 Minutes get, or what does Tyler Hamilton get? In the case of 60 Minutes, they get publicity for breaking the story and a lot of people watch the show.
What does Tyler Hamilton get? He gets to tell his side of the story in his own way. You know it was going to come out anyway through the federal investigation, but this way he gets to do it on his terms and people will be more sympathetic instead of automatically wanting to crucify him.
In the end it doesn't matter if it's unpleasant or not. The story needs to be told even if it's ugly.