Long time ago, i switched to Ubuntu when it arrived. Besides drivers, i still wouldn't want to fiddle around with unstable repos, apt pinning and those long release cycles on my desktop. Nowadays you get PPAs for most stuff you need, that's nice, too. So there is still some additional value that Ubuntu provides. If not that then the arguably larger "Desktop community". Launchpad is a nice-to-have platform as well, in my opinion.