Wonderful watching native Ultra HD material, what about standard 1080P material since there is no real 4K content out there ( I meant say a movie)? Is 65" large enough to show the difference? Seating distance from screen? Food for thought.
you wonder why they don't make smaller Ultra HD TV, probably because of cost of production, impact factor, or simply probably you can't see the difference
Not only price but do you really want to watch your daily news on a 85" screen? Fine if you have 12 - 15 feet distance in between but using an 85" to watch TV program, especially since sources nowadays still has far amount of 480i material from the past, even upsampled to Ultra HD, do you want that? Be careful what you wish for I guess.
Personally I prefer large projection screen for movies but 50 - 60' screen for TV, but that's just me.