VR in its current form, I agree, has only one real use.
But when improved upon and made smaller, I could easily see it being used to watch TV or similar. I’ve done that on a few flights and it was decent.
Not to mention, VR is a necessary step to get to AR, and AR has many more applications. Screens with anything anywhere, for one. Imagine a computer with one monitor, but numerous virtual monitors. Or a TV on your ceiling.
It’s iterative. Gaming just happens to be the current driver.