Why is there still so much to do at end game?

[Sayura_]

the people who are bored have every right to, but the claim there is nothing to do is simply wrong, and I think that's important to point out, because people WILL get discouraged if all they read is 'wahwahwah I'm so bored I have to do the same 2 runs 50 times'
no you don't HAVE to. you CHOSE to.

Mmm...no, actually you DO have to run the same 2 dungeons to get your myth. You DON'T have a choice.