Sure, it has use cases, but the fact is that something like a phone, or a tablet, or a TV can be used and not used within a fraction of a second as required. Putting on a headset is like going to a movie theater -- it is fine for occasions but it isn't something I can see people wanting to do regularly.
You are thinking with present limitations and I mostly agree.
I can actually take a drink with the headset on but the bulk does make it odd. But these next gen headsets are much more compact. Check out the vive flow, and then the nvidia prototype holographic displays.
If I live in a small apartment or dorm or just don’t have a tv in my room and want to watch anything then that becomes a better choice than holding my extremely heavy iPhone or iPad very soon.
I look forward to the improvements -- like I said, I love VR.
My issue is specifically that it has great use cases (which we have gone over, like gaming and immersion) and mediocre use cases (like socializing) and poor use cases (like replacing a computer for general and work use).
Big leaps in technology that shifted paradigms have been catalyzed by a killer app (ex. spreadsheets for desktop computing) or have been incredibly obvious (ex. long distance real-time communication for telegraph/phone).
Trying to force a technology onto the larger population without one of these things by only advancing the technology itself is not only a waste of money, but tends to backfire and set the public against it for a non-trivial period of time.
I have able to buy Quest 2s locally for a pittance in 'like new' condition because people get them based on the promise of some general utility and end up realizing they are only great at gaming and media consumption, and a lot of people just don't want to wear a headset for those activities.