Well, in that scenario you can always change to a different thermostat...
> Having motion sensor that sense your presence and having that data on someone's server is always scary.
Is Google more scary than Nest? You signed up for that data to live on someone's server when you bought a Nest, the only difference now is that it's Google's servers instead of a small startup's.
Uh, yes. A lot scarier. Google is already collecting data on many other aspects of our lives and linking it together. Nest was just collecting data from our thermostats.
I want something that learns and adapts constantly. I'd really love something that also controlled window openings and my whole-house fan, but for now I'll take something that controls the central air/heat.