I could afford one. Most folks working in good tech jobs could.
I have no desire to wear one. I've got a smartphone when I want to do those types of things. I have no need to have a camera always recording things, and when I want to look at a screen, I generally want to be able to type into it, not speak into it. That just disturbs people near by. I'm more of the opinon of folks using mass transit in Japan. I don't want to hear your conversations. Even if it's a conversation with your tech.
Not many people wear those stupid gimicky watches that link to your smartphone either, although those are even cheaper. Just because something is tech doesn't mean people want it.