I had someone accuse me of causing excessive co2 emissions because I supplement my home heat, by using my fireplace insert and burning wood. I asked them what wood does when it decomposes naturally, to which they had no answer. I told them wood and most organic matter emits methane, a hydrocarbon, and co2 when it decomposes anyway, so why not use that and offset the use of fossil fuel for keeping my home warm?
That's my one proud moment where I kept my composure and had a civil conversation with an environmentalist. I support keeping things clean, and not polluting, but how much is too much?