This is effectively what the lead designer of this game told Healers in the latest live letter.
Consider if he had said that about your role (tank / dps) for a second and how you would feel.
Forget the leveling experience, it doesn't matter.
Forget dungeons up to 90, they don't matter.
Forget normal raids, EX's, and Savage, they don't matter.
If you want your job to be engaging, play Ultimate, the hardest content in the game that only a few percentage of actual players do.
Engagement shouldn't be either 0% or 100%. It shouldn't be either braindead easy in 95% of content or pull your hair out in the hardest thing the game offers.