While the functionality they add-in is intriguing, their low processing power is taxing the mobile phone a lot. I'm in apple ecosystem, and constant communication and process offloading reduces battery life of the phone considerably. Esp, when on the move.
I want a watch primarily. A time keeping device which I can depend and can use for a long time (i.e. years). So returning to a vanilla, bona-fide watch was refreshing and liberating. Having a self-winding, completely mechanical heart inside is also nice.