I run XFCE (via Xubuntu) on my home desktop for the same reason. The lightness is a bonus.

Going off on a tangent, but KDE is lighter than XFCE these days.

Or at least https://www.forbes.com/sites/jasonevangelho/2019/10/23/bold-... has been making the rounds.

Thanks, I hadn't seen that. That's quite interesting. I'd ended up settling on XFCE aound the time of the Gnome 2 / Gnome 3 / Unity schism. At the time, XFCE had felt a bit snappier than KDE. I've lately been thinking about giving KDE a try again, so this is good to know.

Very interesting news both regarding KDE perf and XFCE team shrink. I hope they can get some workforce.