Having owned (and still do) all Oculus and PSVR VR's, there is only one reason that will keep me getting this: having to wear it!
See, no matter how they say how comfortable VR headsets are, they will stress your face after a couple of hours of use no matter what. Now, Vision Pro is not as bulky it seems, but believe me, it will make a mark on your face, literally.
The best use we'll get out of this is the "3D personal movie theater" feature, which I still use with my old headsets.
Until we get naturally sized, glasses-like devices to use for everyday tasks, this will be a niche product.