i remember that there was only one real reason to have kde3, quanta, it seems that is still the case
other than that, i can't think on a reason to have kde3
Konqueror
File and folder manipulation in present Konq is up to nuggets
If you delete folders in your left pane, they don't dissapear
If you delete folders in your right pane, they don't disapear in the left pane
If you happen to click on those deleted folders, you get an error message
If you color the icons in the left pane , nothing happens
if you ....this...then that
If you this2 then that 2
If you use Kde3, nothing of that crap happens
If you use a file manager, like krusader, no cr happens
This is not my install, as I have installed 10 times already on 10 different places
Other than that, I am getting used to KDE4