

If the primary benefit was reduced electricity usage, then that’s not a function of crypto mining, that’s just less heating. You would get the exact same results with an electric heater maintaining the same temperatures. You have demonstrated that turning the heat down by a few degrees can save a noticeable amount of money.
You got some crypto out of it, about $13.50 worth, at the cost of whatever wear and tear and reduction in life your computer systems may have suffered, but in the end all you did was just put in a whole lot of effort to turn down the thermostat.
Pick which one to save and which one to sacrifice. Smash the sacrifice with a hammer to free the other, break them both and realize this is just so like you and every single thing you try to do starts with a half baked plan, then goes off the rails and ruins everything until you’ve nothing to do but pick up the pieces.