You'll see this argument again and again on the internet and elsewhere: The type of character someone plays gives yuo some insight into their real personality and behavior. I think that's an absolute crock and has little merit.
I actually had a DM accuse me of stealing one of his game books once,
his chief reason: I played a thief. Turned out another player had
borrowed the book and even had left one of his own with the DM (that
player was shocked I'd been accused). I never got an appropriate apology
from the accuser because he felt his basic gut instinct had been right
in the past that the character a person plays tells you something about
I enjoy playing picaresque rogues whether the class is fighter, magic-user or theif. It reflects a desire for a certain style of adventure and doesn't tell you who I am (might be total opposite of that really).
But I also enjoy playing empire builders who aren't picaresque rogues... I also like playing calculating in nose in the book experiment-prone magic-users, or clerics embodying their faith. When I play a character I do so for the fun and challenge of it and try to find a charcater that will fit into or enrich a campaign in a way that will be fun.
It's not who we play that reveals something about us, it's how we play.