"No-one wants to sit in front of a computer screen for 12 hours per day."

"640K ought to be enough for anybody."

In which country do you do office work 12 hours per day ?

More importantly : no one is forced to look at their computer screen for 8 or even 12 hours a day. You can take a break when you want. You can stare at the window or the roof or your nails every 5 minutes if you want. On the contrary, with a VR headset, you would have to pull it off even for a 2 seconds break. It would be a nightmare, no one is going to accept that and no one should be forced to do that (except maybe in North Korea ?)

This is one of the reasons VR will disappear once again. On the contrary, AR (augmented reality, e.g. hololens) may very well be the next big thing, once they resolve the current issues with hololens (resolution and most importantly field of vision)

That's the beauty of VR. You can set your environment to that of a beach so you can look away at the waves crashing. Or you can in a cozy cabin in the middle nowhere with snow falling around you. Your work screens can remain stationary while you look around.

History is full of naysayers who were wrong.

It is equally full of eager evangelists who were also wrong.

I'm not saying nobody wants to use VR in their day job. Hell, I'd love to! But I also don't want to wear an HMD (as they currently exist) because they're big and clunky and sweaty.

I think that's kind of the point of OP. Oculus needs to design a lightweight, comfortable version that won't be bothersome after a few hours. Not everything needs to be software.