I have always said that just because you can do something...doesn't mean you should. Electric "smart meters" are a good case in point. They do not, of themselves, save any energy. They just allow the power company, and anyone else who the power company allows, to monitor your power usage. What is the use of this? Well, if they can monitor you, they can begin to control, through various means, your energy consumption. Once again, we lose a little more of what's left of our privacy.
The video below makes some very interesting points.