If only Gnome and KDE weren't so arrogant and lazy to just screw their loyal users just to get new toys to play with.
Maybe evolution will take care of this in the very long run, as Gnome and KDE will die a slow userbase death (will still exist as developer playgrounds) and XFCE and LXDE will take over.
With projects like the raspberrypie ARM computer and major parts of the developing world not in the possession of dev machines this could change.
(Poor kids/people in Africa/Asia with a ARM computer won't be hacking on KDE or GNOME with 256mb of RAM, they are more likely to hack on LXDE)