I'm surprised by the number of techies in here. I guess I really shouldn't be.
I'm not concerned too much about the machines themselves but I do agree that this IoT is getting way out of hand. I believe there are things, like this forum and the internet in general, that are great. However, people are connecting things to the internet that just shouldn't be connected. There would not be the issue of hacking or virus infections of banks or utilities or govt agencies or nuclear facilities and missile installations if they were on a dedicated and separate network. I guess the whole idea of air gaps or deadnets are a thing of the past.
I know there are certain things I wont ever use. I do have a smartphone (great for playing solitaire or reading a book in the Dr's waiting room) but things like ZWave door locks and smartphone access to security systems seem to be just asking for trouble. We can slum and use keys for the door locks and enter a security code.
While I haven't gone to the phone controlled lights, I am a firm believer in home automation. Not so much out of convenience but for power saving and monitoring and control of some things. It is on a separate network and is not connected to the internet. I don't need to control the home system remotely as that kind of defeats the whole idea of automation. :)