It was the class that fit my playing style.
When I started playing WOW, and no one had even thought of any exp, I had first rolled a Paladin because I thought it would work my solo playing style. A class that can dish out pain while healing themselves so they don't have to rely on anyone else. But, when I started working with the toon I had created I hated it. Even when I read on how to play it I just didn't enjoy working with it. Then when slogging through some quests in Elywnn Forest I saw a hunter and her pet in action, loved what I saw, rerolled and found a class that fit my playing style and that I enjoy playing.
And I still have that paladin and one day I may go back and worth with it.