My parents for example sweat the small stuff and go around the house turning LED driven lights off to "save electricity" even though it would barely make a dent in their bill.
Granted, they come from a time of incadescants burning 60-100w at a time so I can see why that habit might be deeply ingrained.
Same goes for televisions. Your modern TV is probably closer to the basic light bulbs before LEDs.
I'm assuming the general trend is true for all things solid state. That said, lighting is by far the biggest drop for most houses. Remarkably so.
For commercial and industrial installations, VFDs have probably been the biggest efficiency gain, even moreso than lighting. Half of all electricity consumed is used by motors. Thank goodness for solid state power electronics!
That works out to around $0.035 per day for the lifespan of the lamp if you run it constantly for 24 hours a day, I wouldn’t waste time thinking about it. It’s an extra $10 over 12 years, you’re still using the energy.
Investing in occupancy or vacancy sensor wall switches at $25 a piece would be the best option, then you don’t need to remember to turn the lights off!
But yes, I have thought about presence sensors. I'd really only need 3-4 to cover the primary areas where lights get turned on and not off (if I don't do it). I just haven't gotten around to it