Optional content is never a bad though. You can either do it or don't. Even though you may not personally like it doesn't mean that it shouldn't be added for those who are looking for alternative ways to get bonus items, vanity sets, and gear outside of what the current end-game offers. We have a lot of causal players in this game who don't heavily participate in neither raiding nor PVP , who are then also crying about not having anything to do at level 50. If this gives them something to occupy themselves with, more power to it.
Even those who do raid and PVP should be interested in acquiring vanity gear such as armor/pets/mounts while doing more dailies that give out bonus credits. It's sort of a win/win situation here. We get more content while giving people so vocal about being bored something else to do other than complaining. Of course, they'll complain anyway because...well, because they can, but at least we can point a finger and say, "Go do that instead."