Desktop computers, especially running Windows, don’t get sluggish over time in any case? That one just made me laugh .
I take it you know what you are doing, and I personally don’t have this problem either with any of my desktops, because I take care … but perhaps you might want to broaden your view a bit. Tech support globally has a steady and healthy income from people rendering their computers sluggish by installing seemingly half of any available programs and inviting any possible malware they can find into their machines.
That would be on you then. How about a backup strategy you feel confident in?
I just offered a possible and plausible solution to try. You can avoid it with any far-fetched reasoning and state of anxiety you like, I’m not forcing you to do anything.