I'm certain "VR/AR all the time, for both work and entertainment" is just, not a good concept. Not a good idea.
At least right now when my eyes get tired I can just, get up. Or look away. Preferably both. In VR, this would be a touch more involved.
That's not even to mention the effect on one's vision of constantly having light-emitting screens so close to your eyes, the weight of the hardware, the price, etc.