The previous owners of my new house loved to waste energy from what my power company told me their average was. And I wasn't surprised to see the whole house littered with mostly incandescent lights. Above both of the bathroom's mirrors were a set of six lights. All of them were the old bulbs that frankly I think are obsolete.
So I replaced practically every bulb in the house with an LED one except a rare few that were CFL. I think they're brighter than the older bulbs and they last far longer too. And the energy they use is very tiny in comparison to their incandescent counterparts.