Thank you, @chadyo, for your well documented comment! I didn't develop enough the topic, but yes, the motion sickness can be averted mostly by the game designers. The technology is a relatively new one, that's why we will see more and more developments. I can't even imagine how hard it is to design a game for VR. We just have to wait, see and enjoy the next achievements.
RE: I just tested VR. How much time is left until we'll be part of a matrix?