I used it until I switched to GNOME2 at some point, and I also have fond memories. Just seeing the title of this post recalled the desktops I had had over the years.

My linux days started around 95/96, and I was always using low-resource environments due to necessity. Other than FVWM95 the other system I recall using for a long long time was IceWM which was something I switched to around 1999/2000.