I run 60km+ per week, I use wearables to track performance and do accurate heart rate training. I compete with my friends for distances, speeds, segments, Nike fuel any other metric we think is fun.
I don't lack will power (when my wearables run out of battery I still run).
So your comment sounds way off base to me. Just to give you a perspective you may not have seen.
"Many think" differently to what you said, as I illustrated. Which therefore actually defines wearables in "fitness" as a huge success, which is the exact opposite of the point you were making.
You have a whole industry built on wearables and fitness with millions of miles run/ridden/hiked/whatevered... That's hardly "non-usage".
Did you forget the point you were making?
If you need further convincing, look at the higher end of wearables, with Garmin, Polar, etc making specialised wearable devices, for specific sports and making a killing. Consumer-ising that space is surely a winning ticket. I mean that's essentially GoPros business model isn't it?
I don't lack will power (when my wearables run out of battery I still run).
So your comment sounds way off base to me. Just to give you a perspective you may not have seen.