Saw this image on 4chan.
i.imgur.com/SJ7sFAd.png
And I think it points out something really important about dungeons. They've become really boring. And it's not just the linearity. It's that they've removed all these special little things from them, like the black forge or exclusive profession trainers, because then people complain about having to go there. But in turn dungeons have been stripped of a lot of the awesomeness.