I have used a Nest (gen 1) for many years and recently switched it out for an Ecobee 3 with 3 additional room sensors.

The Nest worked as advertised and I was happy with it. I moved my thermostat location to a higher-traffic area of the house and used Nest Sense to have it automatically determine if I was away. All in all, I was pleased. The only reason I switched to Ecobee was so that I could use my Nest in another home and try something new.

The Ecobee is pretty much the same as the nest. They was you schedule temperatures is to first create Comfort Settings and then you schedule when they should run. It's a little less intuitive than the Nest, but it accomplishes the same task. The additional sensors are a nice touch but I find they are too sensitive. My ~50 lb dog can trigger them, which can run additional air conditioning when I wouldn't otherwise want it to run.

I'm a techie person, often an early adopter. I bought an iPhone the very first day the first one was released. I love playing with and setting up new gadgets. But I keep looking at home automation and find myself thinking "what's the point?" I just haven't seen any killer applications or use cases that make me think this is something I would value. A friend of mine is kind of into it, and his best demo is using his Google Home to turn his lights blue and play music. Fun trick, but not something I need.

Does anyone here have examples of really valuable or killer use cases in their smarthome setup? For what it's worth, I live with my spouse and 2 young kids, we have a small 2-floor apartment that we rent, we already use our programmable thermostat, and we don't own a TV.