Insightful comment, but about 20 years too late. Everything you accuse Google Glass of encouraging has already happened with smartphones.
People you are physically talking to will put YOU on hold while they read that "oh so important" Facebook message.
A group of teens meeting for the evening requires only a table, chairs and a 4-gang socket to charge their bloody devices on. They'll happily sit there for hours at a time NOT looking at each other, but at their iPads.
Idiots in restaurants who HAVE to photograph every starter, main course and sweet and then rush to post them on Facebook, while the meal is still in progress.
People who will happily spend hundreds of dollars on the latest iBrick, not because it's technically superior, but because it will make them "look good" in the coffee shop.
We have reached the most technically "social" generation, and yet at the same time, are the most anti-social bunch of cunts you could ever wish to meet.
And now we'll have to contend with them constantly squinting at their own foreheads, when they should be concentrating on things like driving, or walking in a straight line, or heaven forbid, fucking TALKING to the person they are with.
So like I said, no use in closing the barn door now, the horse has already bolted, careened off down the village and was last seen heading towards the knackers yard.