I main WAR but I've been polishing DRK for the challenge. There is definitely a learning curve and some intrinsic accomplishment (for me) for completing a dungeon without running completely out of MP. I'm also enjoying the different ways you can prog with WAR vs DRK in this new raid tier (especially 6) because of the heavy magic damage and I never really used Dark Mind before. Most importantly, I feel like DRK will get some serious improvements in a future patch and I want to hit the ground running if/when that does happen.

Just because a job may be the "weakest" of the three does not mean that it is unplayable or not viable for content. DRK is a interesting job that makes you think about tanking in new ways IMO.