Through our stages of technological evolution, we have come to a point where in certain aspects, we an say that we have reached a position where being environmentally friendly does not come at a cost.
Why choose CFL?
Incandescent lamps are very "inefficient" at producing light. They produce too much of heat and infra-red lights and hence waste energy while doing so.
On the other hand, Compact Fluorescent Lamps (CFL) are more efficient as they do not waste much energy in generating heat or infra-red or ultra-violet.
We should also know that "Wattage" is NOT the criteria for knowing which light source is brighter. In theory (as well as in practice,) a 20W CFL will give the same amount of luminosity as a 100W ordinary incandescent bulb. Thus for the same light, you save over 80% of your electricity bills. Amazing!
CFLs can be simply fitted onto a standard bulb fixture and they come in various colors… Bright White, Sunlight, Sodium, Bulb-Colored, etc. Newer CFLs can also be used with a dimmer!
CFLs last over 10,000 hours on an average. However, buying CFL from a reputed brand ensures that they last long. Most brands also provide "warranty" on these lamps for a period of about a year.
The only catch: CFL cost almost 10 times that of a standard bulbs (out here in my city!) This is a longer initial setup cost, but, given the energy saving and much longer lifespan of CFL, it is a much better alternative.
Lastly: It is our duty to save energy and help our planet live longer. There are various governments that has either banned the use or promoted the phasing out of traditional incandescent lamps.
I am proud that my entire house is now fully illuminated by CFLs.