10% of photographers will take a long hard look at the D800. These are pros and they will evaluate, test and retest before coming to a judgement. Some will buy it because it meets a need, others will let it pass. Another 10% are the serious amateurs - they will also evaluate, maybe rent it and try it out and then make a decision on whether to buy it or not. Some will, some won't. The next 10% are those that think their supreme talents are limited by their current camera. They will enthusiastically go out and buy the D800, take some more mediocre photos and then sit around the fireplace telling people how to photograph things and why the D800 limits their talents. Out of the remaining 70%, half the people will read everything about the D800, will perhaps contribute on various forums, and then quietly go do their photography with minimum fuss with their current camera gear. The remainder will rave and rant on every forum, insult disbelievers and generally be a nuisance to forum administrators every where. They will never hold a D800 in their hands let alone buy one, but will still want their opinions heard in a most disagreeable manner!
Bottom line: Some folks will find the D800 exactly meets their needs, others will let it pass and hang on to their current gear...but everyone will get much amusement from the 30% riff-raff that are out on the forums abusing other folks