For me to watch a video on a phone, tablet, laptop, or TV is easy. Turn on screen. Play video. With wedding photos, you can make them your phone screen background, you can printout photos and put them on your wall, they fit into your life.
With VR, I have to blind myself to my surroundings, I have to either not move around sitting perfectly still or clear out a bunch of space. What has become more popular in recent years is Podcasting and a huge reason why is because how nonintrusive it is, you can listen to a podcast doing the dishes or on your way to work. VR is the opposite of nonintrusive.
I feel the immersion of VR is what's holding it back, not why it will be successful. It's only when mixed reality takes off that I think we're going to see a big change.