Sarusa raises a few interesting use cases, and I am not one of the downvoters, but there is one point that got me thinking:
I find the fitness tracking to be endlessly useful when I go for my walks, hikes, or bike rides. Turns out my pulse rate tells me a lot. And of course actual distance traveled, speed, steps, and altitude changes are really useful.
This fetishization of the information is rather baffling.
Why is it necessary to track, measure and aggregate such minutiae of the day to day life? Besides Apple, its partners and Cthulhu knows who else, getting all the data, now people is also building their little big-data repositories about themselves... what for?
I recognize it can be useful for proffessional atletes, and perhaps for peeople with specific medical conditions. But what is there for the average joe?
This is an honest question, not simply a critique on Apple or the commentard above