People wanting a support class. Why?

[Machi_Machiavelli]

Pretty every class in the game has some kind of support ability (expect BLM and SAM)

Tanks can reduce damage taken by the party, or use single target barriers and shields to protect team mates

Healers do the same thing when it comes to reducing damage. Though, Astro can increase player or party dps.

Certain dps increases the parties overall dps, better then others.

The devs kind of spread out the support abilities, so things stay somewhat balanced.

But I want to know, what do you actually want from a support class?

Not everyone wants to dps. Some want to just help others dps better. No one will care about your dps if your buffs double everyone else's dps or debuffs the boss severely.