In brief - currently I do not enjoy ret even slightly and am contemplating the heavy decision of switching mains. I originally swapped to my paladin to heal (and did pretty damn well at it) but one of our raiders hated his warrior and wanted to heal on a monk. In retrospect, I regret flexing to allow it, but its too late now.
My dps is okay, in the few weeks I've been ret I've crept from horrible to 'keeping up with people of similar gear'. But at no point has it been fun. I find ret's rotation the most boring and nearly the easiest of any class I've ever played (8 classes, 5 of which I've raided with). Fire mage is even easier, but at least you get to shoot fire and see massive crits all the time. I simmed myself at 9% downtime which is absurd (in my opinion) for a non-energy class.
So obviously not every class is going to be fun for everyone, but I'm curious what other ret paladins out there enjoy about the class. Maybe I'm just missing some aspect of it that would change my mind - and part of me hopes that's the case so I don't have to switch.
Any and all thoughts welcome :]