For me, counterintuitively, the stereo 3D is a secondary benefit. Albeit a natural and welcome one.
But the killer feature is the ergonomics of having any number of weightless screens of arbitrary dimension and placement.
It took me a day or so to realize I don’t need a desk so much.
For five days I have been sitting on my couch with a MacBook Air (couch friendly) developing with many screens of relevant info arranged around me.
A mundane but profound benefit of “spatial computing” is no more hardware screen “keyholes” limiting how much information I can see.
Apple seems to get that the Vision Pro wants to be a Mac replacement, not an iPad replacement.
Everything in Vision works with both see-pinch and track/mouse click. Hoping see-pinch comes to Mac screen in Vision, or simply needing a Mac becomes redundant.