OK, this is not the real reason behind Google Glasses, but I'm sure many of you wish it was. A YouTube user by the name of "Thereisacanal" has taken the idea of Google Glasses and Battlefield, and has blended them together to make a truly awesome next level gaming concept.
You simply find an open space, load up the game and boom, you're right in the action. With enemies coming in from all angles and your surroundings used as the stage, it's a great concept behind how we could game.
Obviously something like this would never happen, but playing games through the glasses wouldn't be a new idea. Many manufacturers sell glasses which integrate screens so you get the effect of a huge screen but in a really small space.
Check out the hilarious Google Glasses Parody too.