I am a massive geek and try and jump on all the new bandwagons, but try as I like, I cant seem to justify a smart home. "Turn a light off" well I am at home, I can do it myself. "Smart lock", I am usually already at the door when I need to use it. "Smart thermostat", mine saves even more energy when its off, and on when I do. I can understand smart security or video intercoms, that's cool. But even then I don't have one.
All these things need batteries or replacements or lose wi-fi/Bluetooth connection, or incompatible with other stuff, and use needless electricity waiting for the 0.5% of the time they will be used by your device. Even for me, who loves to tinker they seem like too much effort.