I still fully intend to do quests with every character I make, dungeon exp isn't that much better compared to just finding a good spot out in the world and slaughtering hordes or questing, lot of fuss over nothing.
Even for gold gain, while it is nice getting guaranteed items constantly to sell, it's not like drops don't exist out killing random crap, still sells good too and a hell of a lot less hassle than constantly running through an area and resetting it.