You sound pretty hyped about AR. The Hololens seems to have considerable shortcomings. But I agree that eventually, AR can do a lot of good. I believe that truly intelligent AR headsets have the ability to support e.g. certain cases of people with mental disorders enough in their daily lives to become much more independent and free. These devices operate in real world contexts and can record them, process them and act on them. For starters, imagine an assistant that remembers perfectly where you left your car keys or your glasses while you are still half asleep in the morning. In the long term, these devices can do much more. The flipside is that they need to have always on cameras and maybe always on micriphones to be useful. This has ramifications of its own.