As an engineer I can attest that it is also useful for quick calculations and illustrations, especially at the concept stage. We also ran process “simulations” in it for fun, but of course something like SciLab would be better suited for it. The possibility to simultaneously work in the same spreadsheet was also a godsend during lock-downs.
Yeah I made a similar discovery after installing a Shelly Switch with Power Metering. The monitors and their brightness make a huge difference as well when in or near idle (for photography, so not a surprise). I’ve also implemented an “anti-standby” function, so the switch opens whenever the current falls under a specific threshold.
For the WoL, since I have a switch, I configured my BIOS so it would turn on after power loss. Now I can start to boot up from afar :)