Why....just why?
I understand the marketing speak behind the IoT and the desire to have lots of wonderful new interconnected toys but they all still fail in the same way that ideas such as 'Speech-to text-to-speech' and suchlike do.
Yes, they are great ideas and in limited circumstances they work well and can provide value but not globally or often not even outside of a lab. The problem comes when you try to explain to Joe Public what it is for and the words just fall into a black hole. OK, so the new Internet fridge can order things for you when you run out but maybe there is no guacamole left because you decided you hate the bloody stuff. As for providing auto-updates of what everyone else in the home group is doing, words fail and so again does any need.
This all seems to be driven by the idea that Facebook is popular so everyone knowing every last detail of everyone else must be good.
Lastly, where the hell is the money coming from for everyone to throw away perfectly good home contents to convert them all the IoT contents? If you don't do it all in one go then you can be damned sure that the interfacing will have changed and your microwave will no longer talk to your hairdryer.