Reading the earlier posts - this is my take on it.
Having a TV calibrated is not like someone coming round and changing your sound systems and telling you that sounds better and you disagreeing.
They take something you look at every day and like and improve it - they dont change anything just outright improve it.
There is noone who would look at a calibrated screen and not like it - unless you watch for soem reason you watch on dynamic mode or are the sort of stubborn idiot who wont have it any other way than your own. Either of those are not enthusiast - so why would you buy a good tv - its pointless.
Every thing becomes clearer, much clearer in fact and just looks correct so when you see a non calibrated image it looks wrong, as it is wrong - generally washed out, especially 3D. Its clear as the day is long and it matters not how good your eyes are - you are not looking for intricate details just the general image.
On the other point I would rather have the TV as cheap as possible and do the calibration myself - think of the cost to have someone spend the time calibrate and then test each set thats mass produced - not to mention running them all in for 300 hours - its no possible or it would make the tv's cost 5 x as much.
What would happen then - everyone would buy the cheaper models.
If your that keen to have the set calibrated pay someone to come in - its cheaper that way trust me