The conventional light bulbs or CFLs are going away in a fast rate. By switching to energy-efficient LEDs, total US lighting power consumption could be cut 25% by 2030. LED light bulbs are very efficient and consume very little electricity, so you will see an immediate decrease in your electric bill by using LED replacement bulbs.

Switching to LED bulbs also a true environmentally conscious compared to standard incandescents and CLFs. LED light bulbs generate very little heat, transferring most of their energy directly into light and eliminating excessive heat buildup that can adversely affect energy costs, thus reduce the manufacturing cost and consume less of the uptapped resources on the planet.
The light bulbs burn very cool, while incandescent bulbs emit 98 percent of their energy as heat! Much more bang for the buck.
These lights can last from 50,000 to 100,000 hours. Incandescent light bulbs typically last around 1,000 hours and fluorescents are good for roughly 10,000 hours.
LEDs are high-efficiency light sources. White LEDs with efficencies of 25 lm/W and up are commercially available, exceeding the performance of incandescent and some fluorescent sources.
LED light bulb does not have any UV or IR in its spectrum. Therefore you are not encouter with any radiation that can be harmful to your health and family.
LEDs contain absolutely no mercury, unlike fluorescent lighting, which has 10 to 40mg Hg per bulb. LED Lighting is considered to be Earth-friendly, and a leader in the “green” lighting movement.
The world population is seeking a better method to conserve energy while being enviromentally-friendly and cost effective. Around 1.5 billion of the world population use LED. Roughly around 21% of the world popultion; this number is expected to grow to 3 Billion by 2015.
By 2010 mass installations of LED lighting for commercial and public uses were becoming common. This is the break down by industry to see who’s utilizing this technology most.
You'll be doing a great part for the environment since this is probably the most eco-friendly lighting system around and with such low energy consumption, it can contribute to the planet at some level.
For those out there who have never heard of LED technology or don’t know anything about LED light bulbs, this diagram should give you a better insight on the advantages and disadvantages and whether it’s suitable for your needs.