Well, not that I'm in favor of the idea, but probably if you're used to wearing VR goggles since childhood (the same way we are with regular screens) spending 12 hours a day with them on may be just fine.
When I am interacting with regular screens what my eyes see and what my proprioception and internal ear perceive are perfectly synchronous. However, the lag in VR is still human perceivable.
It is not a 'getting used to' exposure problem it is still very much is a VR technology problem. We are just not quite there yet.
