Also, what if you go into a private area and still have the glasses on - even if it's not intentional? I'm specifically thinking of that time, many years ago, that I drunkenly wandered into the women's room at Wrigley Field...
...because users will no longer want to run traditional desktop apps anymore, it'll seem too complicated.
You mean apps like Word and Excel? Somehow, I don't think MS wants it's customers to stop running apps like those. Unless they really think people are going to move to the cloud-based versions.
If the human brain were so simple that we could understand it, we would be so simple we couldn't.