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The simple fact is that VR is a solution to a problem, and if you don't have that problem using VR can become a problem of its own. To understand that, you have to understand how VR works. In the Nikon system, VR is essentially a element group in the lens that is moved to compensate for any detected camera motion.
Unity is the most popular game development platform in the world, and it takes VR development seriously. Programmers can download the software for free, and you only need to start paying if you want additional reporting and premium features or if you require a large multiplayer platform.