Comment by kbolino
Also, incandescent lightbulb lifespan is reduced by repeated power cycling. Not only is the legendary firehouse bulb very dim, it has been turned off and back on again very few times. Leaving all your lights on all the time would be a waste of power for the average household, and more expensive than replacing the bulbs more frequently.
And same quirk was also shared by fluorescent bulbs
I still try to fight that habit of not unnecessarily cycling even tho all my lights are LED.