Any other time, I would have agreed with this statement. But, now I feel I am on the opposite side of this argument.
In fact, magick alone has actually reinspired to sit down and play.
Using a character as a black mage, I feel that I'm actually doing something, not just pushing an analog stick around. By shutting their gambits off and switching the selection to "Last Selection," One can actually use magick effectively.
The melee strikers can stand up and auto-attack on their own, and that's boring if one of the is your leader (of course, this is just my opinion).
Also, my "black mage" is hitting harder than my melee users. Of course, I am attacking monsters with their weaknesses, but that's what you're supposed to do!
With as many MP auto-recharge augments I can be licensed to use, I don't need to worry much about my MP being depleted. Any MP that isn't restored by these methods is refilled by walking around.
So, to you who say "magick is useless," I say "I disagree!"