It will come as no surprise to anyone that has read my posts here or elsewhere that I love KDE, so I agree wholeheartedly with the OP. However, I am an inveterate distro-tester and as such always have distros with other DE's to play with at my disposal (my grub screen contains ~ 30 choices). I like Bodhi and its e17, Mint's cinnamon and MATE, Manjaro's xfce, CentOS and Fuduntu's gnome2, etc etc. It's all great stuff, but KDE (on just about any distro) beats 'em all for flexibility and quality of native apps. It's not just a DE, it's a gigantic assortment of (mostly) useful, top of the line software. K3b, kate, dolphin, etc are only the tip of the iceberg. KDE's games are great, and if you want to learn Japanese, study the periodic table, learn algebra or programming, there's a KDE app for you. Installing the entire KDE SC (kde-full) is an eye-opener for sure!