I was around when this thread started, and I'm somewhat sad to say that yeah, as of this week, I've finally quit healing for good.
I pretty much immediately quit healing dungeons after hitting level 80 on a healer, but I kept healing for my static, which I organized, and felt beholden to.
Now that I need to reform one for 5.4 it's pretty much over. It's gonna be strange thinking about fights differently, and working with friends from a different view.