One argument people frequently make about future wearables is that nobody is going to want to walk around in public wearing some device on their head. This is a reasonable point, and it has been made before.
In 1972, when Andreas Pavel tried to get major corporations, including Yamaha and Philips, interested in his portable music player, they all turned him down. The general argument was that nobody would ever want to walk around in public wearing headphones. So instead he patented it.
When Sony co-founder Masaru Ibuka pushed a similar initiative about six years later, he was able to throw the full weight of his company behind it. In 1979 the Walkman came out, and quickly took over the world.
It seems that Pavel had been right all along. And after decades of legal battles, Sony eventually agreed to pay him for his invention.
So maybe yes, if it is useful and it makes people happy, lots of people will be ok walking around in public wearing some device on their head.