No joke, part of me believes that bathrooms (and kitchens, to a lesser degree) are the first places voice-controlled smart home tech will really take off. My place is about as smart as it can be today but it's still mostly a novelty.

Once people can perform actually useful tasks with their voice - "hey siri, turn the shower on to 40 degrees" or "alexa, preheat the oven to 300" - while their hands are full doing something else it'll kickstart the whole field.