Exploring Azeroth and reading the stories that have been worked into the quest dialogue gives me much more satisfaction than spamming action buttons until i kill a random PvE boss. Finding a little hidden village or corner of the map that ties into Warcraft III that hardly anybody goes to gives me more of a sense of achievement than collecting a piece of rare digital armour, and I can do those things just as well on Elysium as on a Blizzard server.