Leveling experience

With the latest patches (3.3.0 through 3.3.5), leveling a character in WoW has become very easy in the early stages (before level 15). These patches make leveling so easy, they make all leveling guides written before the patches outdated and unrealistic. One big change is the health recovery rate of a character below level 15. It is immediately obvious on creating a new character that health recovers at a very fast rate, making health recovery of any kind unnecessary out of combat. I wonder why all characters don't have a better health recovery rate, but that would change the nature of the game, making first aid, eating and drinking unnecessary.