I've yet to figure out why starting out on the Borean Tundra or Howling Fjord doesn't inspire the same reaction out of me.
By contrast, Howling Fjord is more focused, the scenery more beautiful, and plants the seeds of the quest lines that bear fruit in both the Wrathgate and Storm Peaks. But there are only so many Viking rip-offs one can take before it starts to get old.** The same goes for the Forsaken, where after a while you start to wonder if the writers were using Jeremy Irons' character from the Dungeons and Dragons movie as a model.
Perhaps the biggest reason why I'm not that fond of the Wrath intro zones boils down to the storytelling itself: Blizzard does best when it is a) being completely original and not basing storyline elements off of a real world counterpart, and b) when they are trying not to do too much. If the storylines are too much to remember, or you're led too much by the nose, a zone loses its luster.
Look at Storm Peaks versus Icecrown. While both have quests that end two separate storylines, the better of the two is the more original one: Icecrown. In Storm Peaks, while I do enjoy the zone better than Howling Fjord, the quests are an exercise in "spot the Norse myth behind the story". The Icecrown storyline is all about the Death Knights and the Crusaders, where groaners are limited to the Valhalla and Eye of Sauron references.
In the end, these detours into Hellfire and Borean Tundra are just so I can gear up enough to press onward. My rogue is only two expacs behind, now, but reaching L70 means I'm that much closer to my goal of leveling up to Pandaria via BGs. The path has been painfully slow at times, but the end is in sight.
And I really hope that I'm not going to be wincing at all of the sly in-jokes when I reach Pandaria.
*The minimal level of cooperation between Alliance and Horde never hurt either.
**The biggest eye-roller isn't in Howling Fjord at all, but in Borean Tundra: