[lexa1979]

Not OP, and I've never used KDE. But I used Gnome 2, when it was the default DE for Ubuntu. Then Ubuntu switched to that DE-which-I-cant-recall-the-name, with the sidebar and what appeared to me to be a strange desktop which made me lose some reflexes. So I switched over to Xubuntu and it made me feel more at home, it was a desktop as simple as I could ever hope, in fact, its logic was (for me) intuitive. I never felt the need to customise it beyond its defaults: it just worked. It's been ~8 years now, and I never looked back. So, to answer your question: the main advantage is that it looks and works like a known paradigm for someone coming from Gnome2 or Windows 9x/Me/2000/XP.