I wonder if your choice of class is the best for you , Mage at low level are fairly slow to level but do not get into their stride until around level 35 when they become real fun to play.
I wonder if you would be better off trying a few different classes , for example a Hunter as once you hit level 10 and get the choice of different pets i found it was my favourite class although i have all the classes i still end up back on my Hunters , or you may prefer getting in there and killing with a Paladin or Rogue or Warrior , a Rogue can do many quests without killing where others have to kill many mobs.
As the game is either questing or killing i wonder if you are a game person as most games require some form of killing and questing ?