I'm pretty sure every tele-technology has had folks who found them just a bit too far beyond the pale. Why call when the people you want to talk to are a walk away? Why send a telegram when you can call? Why send email when you can send a telegram? etc. I also think even if XR does become a reality, it won't be _us_ that truly buys into it, but a younger generation that grows up in it and makes their own norms in it, the way much of my generation was on the early Internet, and the next generation was on the early Web.

For me the killer application is the ability to replace the office. There's already VR software that lets you have a virtual workspace with multiple monitors in VR. It would be so much more convenient to be able to have a large virtual office available to you in VR rather than building a large, physical office IRL.