Heh, as a kid I always wondered about this. My parents hated if someone left the lights on, but my computer has a 600w power supply... how many bulbs is that!
You'll only come close to this figure when the PC is under full load (like gaming). But while idle, a (modern) PC draws about 30-50 watts.
I certainly had that running 24/7 when I was in high school.
Mine has a ‘Turbo’ button!
I now get upset when someone goes back inside to turn off a 6w LED switched bulb. It’s not worth taking up a minute of 2 people’s time.
At $6 per year, it may not be worth turning off at all. Those seconds to turn it off add up.
But good luck arguing with someone that argues this specific wastefulness should trump all other wastes.
If you forget, it is ok.
Saving has big systemic benefits.