I agree with the price barrier conclusion. I know many people who want to try the Vive or Oculus but can't due to price range and not going to PAX where every 4th exhibitor has one or the other.
I was able to introduce what VR was in a very superficial manner with Google Cardboard however this was still a fairly static situation.
The Daydream VR headset and the various Youtube videos, taking 360 photospheres which also record ambient sound, plus games, apps and navigating around using the controller and the store and VR app menus let my family in on what VR feels like, whether it be trying to run away from sharks or shoot enemies etc.
Works really well with people who wear glasses.