No headphone is going to please everyone. In fact, no headphone is ideal for every task. The HD800 is a a terrific headphone but it has a large profile, looks like sci-fi headgear, needs a strong amp, has no sound isolation, bleeds sound the way a sprinkler bleeds water and goes for "neutral" which is neither neutral nor colored to fit the tastes of many a folk. It's also expensive, inasmuch as $1400 is not the kind of money most people can easily part with for a headphone they don't love more than life itself.
But so what?
The HD800 is one of the best headphones ever made. It's fast, detailed, cleared and revealing. It's open and spacious, providing a 3D sound one would be hard-pressed to duplicate. It doesn't come pre-equipped with thump, but if you have the right amp, you can dial in whatever thump you want. Grado has more slam, but the HD800 brings the grumble. I don't get all the talk about how "bright it is." I suppose if your last headphone was an early-edition HD650, that's your frame of reference, but if anything, the HD800 has subdued high-mids before a single HF spike that's only a few dB above flat. If this is "bright," I can't imagine what flat must be like to some people.
I had more fun with the PS1000 and some, like MH, have had more fun with the T1, but the HD800 is nothing less than awesome, an undeniable tour de force. If it doesn't please you, count yourself lucky that you have more modest tastes. Who needs an addiction to a $1,400 headphone when you can find a slammer that will get the job done for $200-$300? To each his (or her) own. In the end, it's all about the music.