As far as our eyes are concerned, nothing is wrong with lightbulb.
However, the problem is that all artificial light sources produce heat in addition to light. But fluorescent and LED lighting can produce same amount of light as incandescent bulbs but with less energy than incandescent bulbs. This because they don't waste as much energy in the form of heat.
You speak like an eco hippie what with all that conservation, effeciency and worrying about heat.
If we need more energy we build more plants and run more copper dangit.
And figure out a way to make organic diesel from jihadis.