Agree, there's no one life-changing killer feature, but there's lots of small ones. For example my thermostat goes up to 85 when I'm not at home, and I set it

Agree, there's no one life-changing killer feature, but there's lots of small ones. For example my thermostat goes up to 85 when I'm not at home, and I set it to a more comfortable temperature before I head home (it'll automatically get more comfortable when I arrive, but on hot days it's nice to pre-cool). You could accomplish something that works maybe 90% as well with lots of effort and a programmable thermostat, but this is more or less automatic. My entryway light turns on automatically when I get home I can turn off the lamp upstairs while I'm laying in bed, without having to get up.