Me!!
I'm using some other linux distros, too (Debian and Gentoo on servers; Knoppix (Debian based live-cd) for rescue issues; OpenSUSE, Fedora and Ubuntu on the desktop) - but when it comes to the desktop Ubuntu is really the best one I've used so far. The Debian like Software-Management is the most powerful, OpenSUSE really got better in that point but really can't compete with Ubuntus apt-tools.
I think Ubuntu is giving the whole Linux-On-The-Desktop thing a new drive. So other distros are also improving their Desktop-Skills (I heard the next Version of Debian is supposed to be much more Desktop friendly).
But for the next time I won't switch away from Ubuntu for my main-PC
Many Thanks to the Ubuntu-Community
There are 10 types of people in the world: Those who understand binary and those who don't