I'm in the process of getting my Home Assistant environment up and running, and decided to run a test: it turns out that my gaming PC (custom 5800X3D/7900XTX build) uses more power just sitting idle, than both of my storage freezers combined.
Background: In addition to some other things, I bought two "Eightree" brand Zigbee-compatible plugs to see how they fare. One is monitoring the power usage of both freezers on a power strip (don't worry, it's a heavy duty strip meant for this), and the other is measuring the usage of my entire desktop setup (including monitors and the HA server itself, a Lenovo M710q).
After monitoring these for a couple days, I decided that I will shut off my PC unless I'm actively using it. It's not a server, but it does have WOL capability, so if I absolutely need to get into it remotely, it won't be an issue.
Pretty fascinating stuff, and now my wife is completely on board as well; she wants to put a plug on her iMac to see what it draws, as she uses it to hold her cross-stitch files and other things.
Yeah at some point you just say fuck it and limp along until the problem is big enough that it's time for a completely new house or you move.
In our situation it's one of those things where it just doesn't seem worth it to properly address because if we are gonna have an electrician cut a bunch of holes in our walls to redo all the wiring we may as well have a plumber cut a bunch of holes in our ceiling to insulate all the pipes they installed in the ceiling crawl space without any insulation. And if we have them cutting holes in every wall and every ceiling we may as we lost have them tear the whole goddamn house down and start over properly lol.