I go to many wildlife refuges across the Northeast US all the time. You can't imagine the number of people out there with pro cameras (D3 series' and D700's) who are enthusiasts taking incredible photos. The talk there is "I've got to get one of those D800's for the small bird shots and the landscapes."
I think there are more photographers out there who know why they need and are purchasing the D800's resolution, than not. Sure there are people who are just purchasing the latest and greatest, but I think there are more photographers than you think, who have asked themselves why they are buying the camera before placing the order.
As a pro I can justify purchases because they bring in income. That being said, if my one D700 didn't have so many actuations, I'd have a D700 for my primary and backup, and would have ordered the D800 for the photos of which I spoke.
Just so you know, I don't think anyone here thinks you started the thread to antagonize. If they do, then that's their problem.