When I was younger, my dad was always super against using furnaces, and I know why.
He absolutely hated furnaces, and it was crazy. In our house, we had a wood stove. Sure, it was pretty cool to have a type of heating system that nobody else had, but owning a heating system that runs off of wood was very inconvenient and difficult. Furnaces are so easy. The only thing that you have to do with the furnace is to pay the utility bill and program your thermostat properly. Your furnace will run all of the time without you having to take time to think about the furnace. However, with a wood stove, you are constantly thinking about it. During the summer, you spend all of your time finding wood, chopping wood, and hauling wood to your house. If you buy pre-chopped wood, you will spend a fortune just for the fuel of your heating system. Once you have all of the wood for your heating system ready, you have to light the fire every morning and tend to the fire for the entire day. At night, your heating system burns out, so the house is always freezing cold at night. It was terrible. However, my dad was against furnaces because he thought that they couldn’t be trusted. With a wood stove, you didn’t need anything. You could survive off of nature. However, the same wasn’t true with furnaces. He changed his mind when he grew too old to use a wood stove, and that was an interesting shift. I guess that it doesn’t matter at that point.