Physical vs Magic attacks?

[metagloria]

Use MP or don't use MP?

Don't use MP.

Not strong enough without MP?

Level up!

I don't see how this is plausible with characters like Yuna, Vivi, and Rydia.

Defend, or use weak physical attacks while everyone else does all the work. : )

My philosophy with MP (and items) is: Never use them, because you might need them later!

"But is it ever later?"

Yes. The final boss battle.