@Toshiba Tecra
When it gets too old to run Windows, either due to the processor being too slow for the latest bloatware, or because drivers are no longer available, throw Linux on it and give it a 2nd life. You probably won't do any serious gaming on it (though I'm suspecting that isn't your thing), but it should be more than acceptable for everything else.
I work in IT (like so many here) and am still using a desktop that I built in 2011, which is pretty old by today's standards. I'll upgrade it someday, but there's so many other things I'd rather spend $500-1K on right now.