Exactly. I totally agree.
The mystery and intrigue is gone. Clearing a dungeon isn't regarded by my group as "Yeah! We did it!" It's more like "Well, we were expected to clear it." It's become more based on mechanical competition than the adventure.
If I started playing WoW in Cata/MoP, I'd still have that sense of wonder that I had about the game when I started playing. My gf started playing a year ago and she's still hooked on it like I was back in 2005/2006.
PS: "You must spread some Reputation before giving it to aRTee again."