Just turn the computer off when you’re not using it.
If it’s because of bills then you’re not gonna see a significant increase in power consumption from just a computer.
If it’s because of your grid or home circuits, you have bigger problems. Washing machines and refrigerators are a big draw when the motors kick on and everything’s just fine. Hell, incandescent lightbulbs draw 100w.
Source: when I’m worried about power draw I use a kill a watt for a month on the thing I’m worried about.
I don’t think that’s relevant.
To employ a car metaphor, I own a small Japanese sedan. I’ve installed an aftermarket tow hitch and have used it to haul small trailers. I have a pair of toolboxes in the trunk and I live up a road that after recent events would be considered a technical driving course. I’m able to get home just fine in my small, low clearance car with a four cylinder engine and touring tires.
If a person asked me: “what vehicle should I get for towing, working in trades and off roading on the weekend?”, I’d absolutely never suggest a Honda accord.
While the experience of owning a diesel truck is more complex and requires some fiddling around, for example, remembering to use the green pump, understanding when to use the fuel cutoff switch, using a block heater when it’s cold outside, saving up more money for repairs and generally actually operating the vehicle differently under almost any comparable conditions, it’s the right tool for the job at hand and dealing with those differences is part and parcel not just of handling the tool, but completing the job.