FATEs are the necessary evil of having the ability to play all classes on one toon. If they weren't there then you would be bitching about having to farm dungeons... or if the quest were repeatable then you would be bitching about having to repeat the same boring quest.

As for world bosses that require tagging by your alliance to participate in... SE cant figure out how to make alliances... so idk how you think it would work. Proof of this is you wont be able to duty finder 24 ppl for CT.

So, to the OP it seems like xiv isnt for you go play xi