My workplace work stations just upgraded to Fedora with GNOME 3. Suddenly my private laptop with Ubuntu and Unity/ KDE felt out of date, until now I've been using Xfce 4 and KDE 4 at work intermittently, keeping me feeling efficient and familiar.
I still ran Ubuntu 14.10 on my Lenovo Carbon X1 laptop — these last months I had mostly drifted into Windows 10 — and when looking into Ubuntu 15.04 I did not get the usual exciting feel of "new OS". Canonical does not seem overly interested in desktop at the moment. I just wanted to play around with KDE Plasma desktop 5 since it looks gorgeous and decided to go all the way and change distribution as well.
A few minutes with Fedora on an USB, with all devices on the laptop working from the get-go and a quick test of the packet manager, I was ready to switch.