I have nothing automated in my life, that I know of? I don't have a garage; the door to the house has a key; the lights I turn on with a switch; no Alexa, don't use Siri... I am not exactly opposed to automation, but I am hesitant to share even more demographic data to cloud services.
It's hardly a bulletproof solution but it's better than the old solution of, "Oh shit, I think I left X running… welp, time to waste 40 minutes driving back and forth."