I've had amazing "sci-fi" experiences in VR.
Lone Echo on Oculus, Farpoint on PSVR, and others. So blown away that certain geners of non-VR games are not completely non-compelling to me. Those 2 games, while not the best games ever, gave me the feeling of "being there".
The difference between playing games on a monitor and games in VR, the good ones, is like the difference between a picture of the grand canyon and being and the grand canyon. The picture does no justice. Sure it might be pretty but it gives no sense of the scale and presence. You don't feel that there's a mile deep canyon that's 20 miles to the other side. You just see a pretty picture. In VR though you do get that sense of scale. That volcano in the distance in Farpoint actually feels 3 miles high with a 20 mile high plum of ash. Hiding behind a piece of rock actually feels like hiding and not "pressing the hide button".