As a monk main, I find it pretty relaxing to play Black Mage. You are ranged, have an infinite resource that isn't TP, Can make use of sprint to get out of AoE's quicker, only 1 DoT to manage, easy rotation, easy buff management, easy procs, Not many instant Offensive GCD's to manage to keep DPS and your cast times usually line up with the GCD. (unlike bard who's cast times are faster than the GCD which can feel really clunky at times) The only problem with black mage, is if the boss you are fighting hates you and decides to put a circle of death under your feet every time you try to dps.