Using home assistant since 2017. As you add stuff there's more synergy, like a network effect. I have automations and services that:

• Adjust the bathroom floor thermostat according to the prevailing hourly energy price

• Adjust the colour temperature of lighting during the day so blue light is reduced in the evening, allowing natural melatonin production to function

• Announce on a local speaker when our child gets to school in the morning using their phone location

• Operates festive lighting in the winter with reference to sunset and sunrise

• Turns off all lights when leaving; or sometimes if I'm feeling more paranoid

• Replays lighting patterns from a previous week to simulate* occupation

• Sends me an alert if motion is detected and nobody's home

• Turns off the picture on the TV if nobody's in front of it for a while using a 60GHz radar sensor

as well as a few other things. I don't want a smart home that's just remote operation with a phone. I want to use capabilities to automate things so I don't need to be concerned about them.