Too many people are brainwashed with this carbon footprint rhetoric to consider coal as a heat source. I've had people give me a hard time because I'm using a "dirty" fuel to heat with. I don't know how people overlook the fact that their heat pumps are powered by coal fired power plants!
Or heating with oil that has to be shipped halfway around the world! Then I get to hear from ill-informed people that I'm "creating a hole in the ozone layer".... Funny, I didn't realize the burning of coal produced CFCs!
And another favorite "Aren't you going to get black lung from that coal?!"