What is the MP bar for on a Melee DPS

[Averax]

As someone already said, the MP bar is your character's, not your class's. Having a special parameter bar for each class would be purposeless.

I take Cure on every class up until i can't at level 30, so i get some use from the MP bar before i unlock my job.

Think of it in lore terms. Everyone has their own Aether, and whether or not they choose to use or build on it is up to them. That MP bar is really a constant reminder that you decided not to use magic, and instead decided to use brute force, and it wants you to feel bad.

the MP bar silently judges you.