I was able to snag a Glass for a good price when they killed support (before selling it off again after a couple months). I enjoyed using it, and being on a college campus at the time reduced some of the social awkwardness. I could push notifications to my face with IFTTT and the voice recognition worked reasonably well. Ironically, I found the most useful feature to be the camera. It's liberating to be able to wink and get a snapshot of whatever is in your field of view, whether it's some info you want to remember or a small moment you want to share. I'm on vacation now and find myself fumbling with my phone to take snaps of interesting things I want to share way too often.