At night, a quilt keeps you warm without requiring heating all the air of all the rest of the house. Small lights close to the task at hand are much more efficient than a high-powered light fixed to the ceiling. Fluorescent lights consume much less energy than incandescent unless the light is only on for very short periods at a time. The idea that energy use is a private matter, that if you pay your bill it's no one else's business how much you use, is obsolete. In the current system, the more energy is generated and consumed, the more violence is done to the Earth and its life, including people.
Energy use is thus an ethical issue and everyone's concern.
Too many are sadly ignorant of how little of the full cost is paid through the bill. The good news is that energy efficiency can improve both the health of people and the health of the economy.