Healer since day one. I agree with the sentiment, but still think a few points need defending.

Fluid Aura is my go-to if a mob is outside of Flash / CoS / Overpower range. Bards not Quelling and Black Mages with some lucky procs are notorious for prompting this. Nine times out of ten where the mob gets in a spot to be Aura'd to the tank well. If anyone trying this misses, sorry. Positioning accidents happen. Screw the guys who use it all the time, or to knock foes further away.
Raises cost a LOT of TP. I've learned NOT to risk it if I know that giving up about 1/6 of my MP pool will lead to being unable to keep allies alive from bursty damage. Screw the guys who never try or learn their limits.
White Mages aren't glass cannons. I've tanked Titan in both story AND hard mode (up to the last phase), almost all of Dzemael Darkhold, and numerous small pulls in dungeons when tanks fail. If it's a measly 1 or 2 monster pull, I'm confident I can keep myself alive while self healing and DPS'ing. In those cases, I'll pull it for fun. Screw the guys pulling suicidally.