First off, anyone who has tried a Vive gets blown away. Even the stupid demo applications are hella impressive. When you play something like Project CARS or DCS, it's very difficult to communicate how real the depth is, and how immersive the full room simulation and tracking makes the experience.
Second, it's not just gamers and technical people. My wife, who never has expressed any interest in any video game ever, is bugging me to get the wireless adapter so she can play Holopoint more. Which she routinely plays until she can't move, and Holopoint is a pretty basic game. I pay attention when there are technologies she looks to use; I imagine others do as well.
Third, the average price of most Vive games on the Steam store is under $5. This is impressive, given that there are probably only 500k Vive units out there.
AR requires you to wear stupid headsets in public. Outside of specialty professional engagements, until you get AR on a contact lens, this is never, ever, ever going to go into the mass market. AR and 3D TV are much closer in terms of the market problems. The gateway to AR is going to be your smartphone.
VR requires a stupid headset but literally puts you in your own world.
VR, and the Vive specifically, is one of the few technologies that has left me awestuck. The first time that happened was when I figured out how to use my 300 baud modem. The second time was when I got my hands on an internet connected VMS VAX. This was the third.
Interesting times. If you're a doubter try a Vive on a well equipped PC.