With the changing attitudes toward privacy, I wouldn't be surprised if in a few decades you would be considered stupid/crazy/insane to not have a Glass-like device recording your life. with which you could easily find out e.g. what you did, where you put something, etc. Reviewing what you did during the past few days could definitely be a beneficial thing.

(And personally, I don't have a problem with being recorded in public. I value privacy, but that's privacy in private places, not out in public.)