Re: the disconnect between the body's physical senses and any VR environment,
One thing to remember is that e.g. for 3D displays, different people vary significantly in terms of how satisfactory they find them; and I presume that the same holds for VR. Even if, for example, only a few percent of people find VR technology useful (or tolerable), that may still be enough numbers for it to become a viable market. I'm not sure I'll be buying into it, but my preference is not likely to be terribly indicative of the wider situation.