Virtual Reality is an example of the most advanced technology possible, and for many people new equals dangerous. There are definitely some ethical concerns that arised with the advent of Virtual Reality and they do need to be carefully considered.
There is a wide group of people who believe that Virtual Reality may contribute to the growing desensitisation of society – the phenomenon in which we are exposed to violent and shocking images so frequently that they start to lose their impact and as a result, we become less likely to feel compassion when observing pain and abuse. Truthfully, this phenomenon has been discussed since the advent of mass media, but the incredible immersitivity of VR experiences in gaming means that we can experience fictional violent scenarios that feel more real than they ever did before. As a result, many people are concerned that the process of desensitisation will now start to progress much more rapidly than before.
What is more, because Virtual Reality involves the sense of touch and enables to immerse oneself into scenarios shared with users from all over the world, there is a possibility that we could become victims of violating actions performed by another person. What happens when someone is sexually harassed in Virtual Reality? Can that person claim that he or she was being inappriopriately touched if the harasser was physically located in a completely different place? Those are questions that the justice systems all over the world will definitely have to wrestle with.