You are not alone. I've been using e16 ever since I heard CmdrTaco rave about it in (I think) 1999. You just cant beat its stability and reliability.
GNOME, KDE, XFce: take note! E16 has the primary virtue of all UIs: It just doesn't change. There were some modest adjustments of the configuration panels recently (last 4 years or so) and a single point where the way all settings were stored was changed. Other than that there have been no regressions of any noticeable kind for over a decade.
For serious work it's nice to know that I can rely on e16 both working and behaving as I expect. I've opened sessions which did not terminate for over a year without leaks or crashes of any kind.