Incandescent, though an energy guzzler, still has their application. Eg in agriculture, during the brooding period and incubators for hatcheries, incandescent bulb's heat is applied for either keeping the day-old/new chicks warm and in replicating the warm condition of a mother hen sitting on the egg to make it hatch in the hatcheries. But in terms of lightning, many people are switching to the LEDs and CFL as they consume less power, especially for some of those running a prepaid meter where every watt counts.