Can someone convince me on smarthome/home automation tech?

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.