A camera is the one thing I miss when I leave my iPhone at home and go for a run. I have no idea how a camera could work ergonomically on a watch. Maybe it’s just not feasible. But it is mildly frustrating when I’m out on a run and see something interesting that I’d like to photograph.
Why can't you just enjoy that something interesting there and then? Do we really need to capture everything and share it with everyone?
EDIT: slightly tongue in cheek but curious nonetheless.