I switched to Debian (Wheezy specifically) after 8 or so years of using Fedora (initially Fedora
Core) with a year or two of Gentoo in 2008-9 or so. It really is a breath of fresh air.
You don't realize it initially but Fedora/Ubuntu are suffocating.. rapid releases changing things that didn't need to be changed (I have zero objection to actual improvements, that is the reason I used Fedora for so long (and Gentoo during a time I wasn't satisfied with Fedora's ability to keep up)), focus on the "standard" experience causing unnecessary breakage, etc.
Now I just sit on Debian, look at the other distros, and scratch my head. It seems like they are expending so much effort just spinning their tires. A new Fedora graphical installer? You're only going to use that once, and the existing one wasn't broken! Ubuntu on phones? You haven't even figured out how to get "regular" people to use it on desktops yet where your competition is mostly windows... now you want to compete with iOS and android?
Maybe they are getting somewhere, but it sure as hell appears to be inefficient. Ease off the throttle and do things right.