As someone whose VR headset has been collecting dust for a year, I think the key is movement. Moving in VR just sucks. Either you teleport around which is disorienting or you slide with a stick which is nauseating. All my favorite VR experiences didn't require me to move further than my play area. If someone comes up with a cheap omnidirectional treadmill or something just as good it'll blow the market wide open. Until then, almost everything is more fun on a normal screen than in VR.