I have recently found a new appreciation for playing the game. I usually turn off all sounds and just watch miscellaneous youtube videos to pass the time while farming/leveling an alt/doing dailies. Unfortunately I can watch videos a lot faster than people who make them so ran out of things to watch in the background. This led me to turn on just the music and leave off all other sound effects (no voices, error messages or spell/battle sounds).
And you know what? When you don't have spell explosions and character grunts and a thousand other sounds going off constantly you really begin to appreciate the music and "natural" sounds that compliment each zone. Some zones become really tranquil and relaxing.
Give it a try if you are leveling an alt through a zone you have played a hundred times before and see how different it is.