I think it's nearly inevitable that the immersiveness will lead to some useful stuff. We have a lot of biological circuitry that can take advantage of the extra bandwidth of VR. Already there's some niche applications[1] that show potential improvement on 2d solutions. Voice chat with avatars in a 3d space[2] looks like it could be useful for remote collaboration.
That said, I don't know what percentage of people will want to become fully immersed in a computer world. It can be disorientating when you put on the headset and the real world gets replaced by a computer generated one. I think the majority of the world probably won't jump on board until convincing augmented reality becomes possible. I kind of see VR as a building block for AR since they share a lot of the same problems.