Has anyone quit healing?

[ForteNightshade]

Yes, but my point was that people go to a fighting game for the competitive skill based challenge.
A theme park MMO? Not so much.

The whole purpose behind a theme park MMO is offering something for everyone. Once again, I'll use tanks as an example. Dark Knight catered more towards players look for a greater degree of depth as it relied heavily on procs, MP and Dark Arts management; Warrior was the "DPS tank," and Paladin somewhat simplistic for those looking to ease themselves into the role. This created a nice dynamic for three different types of players. Two expansions later and all three of these tanks have become somewhat shallow copies of themselves. Yes, they still have differentiating abilities but their overall gameplay is near identical. Ironically, Paladin differs the most, and is arguably one of the hardest tanks to optimize. Healers have similarly become copies of each other—in some ways worse than the tanks who still have their baby DPS rotation to fall back on. Scholar is probably the most "complex" if only because shield healing differs a fair bit from regens. Nevertheless, they generally play the same.

To borrow a theme park analogy. Instead of having a handful of "thrill seeker" rides, everything goes no faster than the little roller coaster circling around a track because people would complain they can't go on every ride otherwise.