AR glasses will find niche applications, I am sure, for example such as Driving AR glasses that provide key information (user selected) when plugged into the cars electronic systems (e.g. GPS, Lane sensors, warning systems, night/fog-vision, etc.). And I am sure the people first adopting AR glasses will be the same people with bluetooth headsets glued in their ear standing behind you in a line-up or elevator and talking on their mobile phone oblivious to anybody else around them. That's progress I guess (?).