I guess you are not aware that the Nest also monitors when you are home and when not. Is that really information that you would like to share with anyone?
You can ring my doorbell and find that out. It has sensors to detect when you enter a room or flip a light on to modulate the temperature accordingly. It's not feeding info to a conglomerate of home bandits ready to rob you blind thanks to google. People really need to take off the tin foil hats.