I set my uncle (a smart but non-technical guy in his mid-60s) up with a Linux desktop running KDE Plasma several years ago, when I lived we were roommates. Duri

I set my uncle (a smart but non-technical guy in his mid-60s) up with a Linux desktop running KDE Plasma several years ago, when I lived we were roommates. During the first few weeks, he would occasionally have a question about how to do something or what something was. It was a gift to replace a painfully slow old Windows computer he was using at the time. In those 5 years, there has been no instability issues and no performance degradation. The content he likes to browse and stream all still works smoothly, and he seems comfortable and happy with the user interface. (He's actually told me that by now, it feels more intuitive to him than the Mac desktops they recently switched to at his workplace.) Light power users are in sort of a valley along the Linux suitability vs. user technical expertise curve right now. But for non-technical users to their left and sysadmin/developer types to their right, the Linux desktop is a pretty good fit these days.