[Spitty]

Because, underneath all the ill-use cases and complete freakout paranoia, there's good and useful applications to realtime telemetry.

Location can be used to optimize matchmaking in FPS games, for instance.

Heart-rate increases can be tied to an increase in volume or change in tempo in a background audio track - a game can mimic the actual intensity felt in realtime, furthering the level of immersion experienced.

And the Kinect can track your location in your living room so you can beat the living fuck out of flying fruit.

It's pretty simple, really.