Gonen32: When the game allows it, I usually go for non lethal.
Really depends on the type of game.
I tend to play RPG/adventure games where your character is a blank slate and they let you chose your moral compass as a NG warrior, not using violence as a first resort, but not shying away from it either.
In RPG/adventure games where the character has at least a somewhat defined personality, I tend to play as I feel the character would.
In any game where your character is evil or in action games, I tend to be a total psycho. In particular, in any game where I wield a light saber and force powers, my moral compass completely goes out the window. Same if you put me on a race track with a car. I will drive you off a cliff if I get the chance and laugh like a maniac as I'm doing it.
In most strategy/god games, I tend to play as a cold pragmatist, taking whichever direction is most expedient to my goal.