OK and I get that there would be lots of real world application but have you been around a bunch of young people in public lately? (especially Universities)
They all walk around pausing constantly to look at their phones. Or they simply stop in a public place to check their email.
So yes lots of young people will adopt this tech. They must have a permanent crick in their neck right now so that alone should push sales...
But as I get older I would prefer to simplify my life rather than walk around looking like a cyborg.
Information is valuable but so is peace and walking somewhere without getting pinged because I've got a new email is probably a good idea. I also avoid stress and I like to choose what info gets to my brain.
Just my opinion but we should consider were this will lead us. I would prefer a simple life with real relationships.