These things have cameras and mics in them. Am I the only one concerned about people walking into every space with surveillance systems that are capturing us and sending that data to some random set of companies who have no obligation to keep our information confidential? How can I have a conversation with a friend wearing one of these? And surely workplaces will ban these?
For all but the most security-conscious companies, that ship has probably sailed. Bringing a camera into many companies used to be an exercise involving forms, approvals, and so forth. Now everyone has camera, video, and audio recording in their pocket.
To those around you, there is a big difference between having a video recording device in your pocket compared to on your head. I would personally feel pretty uncomfortable if someone pulled up to the next stall in the workplace bathroom with these on
Hookup culture or any space (bars, clubs, festivals) where some level of shenanigans are expected will be destroyed by this even further than what smartphones has already done.
Imagine you take your kids to the beach and people are wearing these things. So even the beach won't be safe anymore.