on Levi (also played on Diabolos, lamia and Malboro but have since deleted the alts) I'm one of the ones who commented back a few pages that Healers shouldn't be expected to dps because we're too busy! I actually dont main heal anymore simply because I am constantly running into the tanks/dps who prove KisaiTenshi is right. Data center full of trollers, who knows, but the end result.... Healers spend 98% of their time trying to keep their parties alive.
On a side note, alot of people came to FFXIV from other mmos; mmos which DISCOURAGE healers dpsing because thats not their job and will cause people to wipe. Healers have dps spells to level when they're not in dungeons.