No, it's not an extension of something we already use, or at least a better way of doing anything.
It's not a better way of communicating, not a better way of computing, not really even a better way of gaming when you count the drawbacks. Heavy, short battery life, sweat inducing, isolating, and just plain uncomfortable. and that doesn't even count the troubles I would have with it and my eyes and hands.
I don't even wear my glasses unless I absolutely have to. (for driving). I have multiple monitors here, multiple computers, keyboard, mouse, that's all I need for most of my job, and all without something hanging off my face.
I see some potential for the disabled, but it's a LONG way off.
But whatever, we shall see what we shall see. Have fun with it, and I'll probably never own one.