People wanting a support class. Why?

[Ashgarth]

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?

Same reason you seem to play a Red mage even though Halers and Tanks can also spells and DPS. It's not their focus.

People want a class that focuses solely on support instead of it being a byproduuct of their DPS rotation, simple as that.