Why changing the incandescent bulbs for the energy saving bulbs?

Incandescent bulbs don’t exist any more but they are still lighting in some houses. But why changing or why use these ones. It’s just a question of energy? In the long run Energy saving bulbs last more and have a longer life.

Check the following table of energy usage:

Britishgas.co.uk

Source: http://energy.gov/energysaver/articles/how-energy-efficient-light-bulbs-compare-traditional-incandescents

 

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