What would you do if you were not home? Like my car is outside at work for 10 hrs. Where am I putting those towels? And if it's cold enough for my breath to fog my windows why on earth would I want to drive with the ac on? Just let the dang car heat up... Why be miserable and messy? I can afford the .02 cents of fuel it will take for my car to heat up and not be miserable. Can I do those things and hop right on in my car and start it and drive off cold and miserable with cold and miserable kids who can't be all bundled up in coats (because it's not safe)? Sure. But I can also start my car from my kitchen, while drinking coffee and go out and get into a reasonably warm, thawed out car where I don't need to run the a/c or wear gloves to drive and drive away warm and toasty and safe, because its 2021, not 1980, and there is literally no reason to not use the tools you have available to you.