If you live in an all-electric house, those incandescent bulbs are helping to keep your house warmer in the winter. There’s little or no advantage to using CFL or LED bulbs, at least during the colder times of the year.
I live in the upper midwest. Our high on Monday is predicted to be -15 degrees. My highest heating bill in the past 8 years has been $163. My highest electric bill during air conditioning weather, has been $249. Heating the house by light bulbs isn’t very efficient, and it’s expensive to pay for the A/C to offset their heat during the summer. So, again, I’ll buy LED bulbs.
True, and often forgotten.
And of course it works in reverse, too. When you are cooling your home the AC runs longer to remove the heat added by incandescent lights. (As it does the waste heat produced by all electric devices.)