There is no disputing the fact that leveling is quick and easy in WoW right now. Players can run random dungeons one right after the other and get from 15 to endgame rather quickly. Questing is more streamlined as well. And there are many other ways to get experience, such as pet battles and archaeology. Add to all of this the heirloom and experience buffs and you can zip from beginning to end without seeing much of the in-between.
But the heirlooms aren't mandatory and neither is running dungeons. Is the speed and ease of leveling in the eye of the beholder?