I pick cleric cause I wanted to level fast, and in most cases I don't trust others to do the healing.
I'm not much of a hulking plate armor wearer kinda player, so warrior class will be last for me... although, it is kinda cool when high level templars look like gundams.
Alt is a sin, and it was a close call, as sorc and ranger are other classes I want to roll.
The deciding factor was that I've never thoroughly played a melee dee pee ess class in other MMOs.