But an oculus rift can use a 60$ screen to make you think you're in a room with a 600" display (really, check their cinema demo. Wow. Just wow). Or a room with 50 600" displays, no problem. Nimble VR can track your hands, and their competitors claim they can do it accurately enough to make you see a usable a virtual keyboard [1].
Why sit down at a docking station with GPU, monitors, storage when you can take it with you ? Why can't I have 5 30" monitors with full computer games while sitting on the train ? In an airplane ? In a 1 sq meter room ? Why would employers bother with any computers/peripherals other than a cellphone at work when a cellphone + occulus can provide a better and more useful experience ? Why can't I sit down in the morning train, snap my fingers, and have 3 large monitors with my working environment appear around me, usable ? Why can't I sit on a plane in an economy seat and do the same, all the while my mind convinced it's really sitting in a huge outdoors open space ...
Additionally I wear glasses. Let me tell you, there's no way to have the perfect glasses for every environment. Some part of the monitor is a bit blurry. Just enough to be irritating. The bigger the monitor, the more distance difference there is between the closest pixel to my eye and the furthest. That degrades quality. But I can see every pixel on an oculus rift display perfectly. So, at least for me, such an environment can actually be higher quality than reality (or at least compared to real displays).
[1] http://techcrunch.com/2013/07/24/dextype-virtual-keyboard/