Problem with google glasses is: you have absolutelly no idea how it feels, and what you really see with them. Camera can't bring that to you. You are just victim of hype, talking about something you have 0 visual experience about. You don't know how to use them, before you put them on your head, and see what you need to see. So, I would be really cautious talking about those. It's not like phone, or anything you used before, to know what you can compare it with.
Also, what you are overlooking is the fact, that, you will look very dorky with them. Imagine yourself sitting in cafe, with glasses on the head. I mean, cmon.
Also, wifi with 2.4Ghz 1cm from my brain? It's screaming BRAIN CANCER all over the place.
Another thing with google glasses, how will people, who already wear glasses, wear google glasses? On top of their glasses?