There is so much bad advice going out in this thread, it's incredible.
Currently monks are the best dps in the game. The trick is to stop using demolish and touch of death. I'm not kidding. There are spread sheets out there, you can look it up for yourselves. But currently monks can parse for approximately 190-210 dps in level 45 AF gear. Other classes peak at about 170.
As far as difficulty is concerned, once you cut the fat from your rotation it's basically 1234123412341234. Simplest class in the game.
Current pecking order is as follows: MNK > SMN > BLM > DRG(this varies on fight) > BRD
You people really need to stop calling the best dps class in the game the worst simply because you don't understand math or the class. :P
EDIT: To add a bit of additional evidence to this claim, Blue Garter's BL group consisted of PLD PLD WHM WHM MNK MNK MNK DRG
There is a reason for that madness, and it isn't because MNK sucks.