I think there are many problems with LED general purpose lighting. They are too bright, wrong colours, and others. I prefer to have the windows that we can have the light from the sun outside, and when that won't do, to use incandescent lights which are not too bright. However, not everyone will do that, and they put too much light outside at night too.

LED does have uses, such as many indicator lights (although they should not make them blue (unless you already used the other colours); but blue indicator lights are too common), and for some kind of displays. I think LED is not very good for general lighting, Christmas light, etc.