I live right above the kitchen of a 24 hour coffee shop/cafe, I almost never turn my heater on (a few days every winter). However the apartment permanately smells like coffee, and I have become a coffee dependent freak. Rarely touched the stuff before I moved here.
I spend more on coffee in a year, than I ever would have to heat my apartment. Hardly a economical trade off.
You now know the power of the caffeinated side.