I don't see the big difference from my dad running around with a camcorder when I was a kid (and it was considered normal for families to have really embarrassing home videos watched for laughs, I think AFV made me value privacy), or a modern father using a phone to film, other than with the headset he'd have to look in my direction instead of through an eyepiece or a screen.

Reminds me of that black mirror episode: The Entire History of You

I wouldn't be surprised if this year's iPhones include 3D photo / video capture hardware, now that they can talk publicly about the headset. I doubt many people will ever wear one of these to a birthday party, but I could see people flipping a toggle on their phone to capture in 3D. It would take up a bit more storage space, but you could go through and convert to 2D after the fact if you're low on space.