I remember being a bit of a Unix fanboy in the early 2000s and I had seen some program on EuroNews showing NASA computers running CDE or some sort of Motif based DE.
So of course I wanted to try it. And I actually used OpenMotif for a few weeks until I switched back to Blackbox or Openbox, whatever I was using at the time.
Fun times, switching distros every month and trying new things in the Linux ecosystem.
But in practice, today, I wouldn't part with my vanilla Gnome setup on Fedora for anything.