The irony of seeing a guy with big goggles on his face gawking at his children and recording them while the narrator says something like "get closer to those memories that matter most."
You will not get closer to your family by hiding behind a big funny pair of goggles.
The immersive home-theater possibilities on the other hand, now we're talking. Plane rides could potentially become tolerable.
That being said, I still think watching movies is a group experience that's largely lost with a "single player" device. I love watching with my family and making popcorn and laughing and cuddling. It seems impossible or awkward when we would all have to have our own pair of goggles.