Please let me play multiple classes.

[Garnatian]

Nothing is stopping you from gearing your other classes/jobs. It will take longer to be fully optimized, but so what? Just because it would take long doesn't mean its not possible.

So your real issue is: I want all my gear NOW T_T

This is incorrect. It doesn't take longer, it isn't possible.

This post is just incredibly ignorant. No where have I said "I want my gear now". I am more than willing to put the effort in to get the gear, but the game will not allow it.