I know your feels OP. I don't have it as much now but I can tell you a story.

Once upon a time there was a tank, who was clad in darklight gear rearing to go in WP. He had the attention span of a humming bird and wanted the run to be as fast and as speedy as possible. We made our way through the dungeon that is wanders palace with ease, and this was pleasing to the tank. Until we reached King Tonberry. "None shall pass!" Said the Tonberry of high royalty, as he summoned his brethren. Exactly the bard in our group said.."I shall handle the additional enemies, with my high accuracy and damage they shall die quickly!" I the healer agreed, so too did the monk nod to the Bard. But the tank? Well...

"No the White Mage shall do it!" Said the tank. Shocked by this I replied..
"I've never done duh before I don't think I can han--"(internally I was not expecting this..)
He interrupted me with. "DO IT NOW" while stomping his heels. "If I can do it on my WHM you can too!"
The Monk scoffed, and proceeded to ask the tank if he was dropped on his head.

But I gave into to his hunger for instant gratification. We tried it his way and he ended up dying. He then proceeded to froth at the mouth and said nothing since he dropped. The bard to the helms on the adds and the run ended smoothly. I have not seen that humming bird tank since. It did upset me, but what I want you to know OP is that we cannot let people ruin what we enjoy.. Or to quote the movie the other guys.. "if you start hiding your shit from the world eventually the world comes to your door!" And "I'm a peacock you gotta let me fly!" I urge you to please don't let these types ruin your fun keep pushing on. If I were there we could go do dtuff together but we're "worlds" apart. Best of luck !