Your input methods comment is key. Today we can have an almost true to life virtual driving experience with peripherals like direct drive steering wheels, loadcell pedals, shifters and a motorised driving rig. It's an expensive hobby with great innovation. Until the interface problem is fixed for VR then it will be a very subpar experience compared to what's already available.

You can now extrapolate this to almost any interaction in VR; walking, flying, typing or shooting.

Until there's an input method that is able to emulate these experiences effectively, then it is pure science fiction.