Just to toss in my two gil here, I enjoy having a monk in my parties.
They're toe to toe with me in TP gain, and they can open Distortion with Howling Fist -> Dancing Edge (The skillchain I've been doing for the last few levels).
I also have to admit, I'm jealous of a lot of their abilities. Chakra, Focus, Boost, etc.
And who doesn't love seeing a Galka with stubby little legs get a Kick Attack in? ^^
On another note, many people think that there needs to be one set party for the Promyvions... And that a Monk has no place there.
Well, the poster above me -Points at Mai- came along on our Promyvion-Holla the other day.
Combo hits pretty darn hard, let me tell you.
Coincidentally, that was the first time out of 8 tries that I beat that promyvion (First try [second attempt]) with that party.
Granted, the paladin did an amazing kite job, and the White mage kept buffs up perfectly, and MightyStrikes+Two weaponskills (Icarus Wing) totally rules, but..
Mai did a fantastic job.
Hundred Fists, go!
Anyways! Point is, Monks are solid DD that simply become -insane- damage in the end game, even moreso than they already are early on.
Plus they just look so darn cool. (>_<)/