It's helpful to level more than one job, because chances are events will call for certain set-ups outside the ones You may favor. Those very jobs You level does not require that they be top notch in gear slot by slot, that's a misconception, but rather keep them in decent shape and up to date on spells; This way You have more options if you are ask to tank, heal, or You just want to solo for w/re reason. I myself with My shell did the LB as (MNKx3 SMN BLU) I was one of the monks. A job ppl don't normally see Me on, but I understand there are times when I have to change job class to achieve the outcome. I do know what You're going through, but if You give it a chance and level more jobs You won't feel the fustration You're going through now.

And for the record I am a Uko WAR /Masa Sam, the BLU is a Mand THF/Alam , The Other Monk is a APoc & Cala DRK, the third Monk is curruntly trying to decide if He wants a relic or mythic polearm. Sometimes You have to bite the bullet, and venture forth on the best jobs possible to obtain that 'win' [The win is all that matters] then return to Your home turf. GL on whichever path You choose.