No, I don't need the game to tell me how to play my character. To the contrary, what I want is for the game to recognize and acknowledge my good actions as good actions. And for that, the game needs an objective frame of reference through which to decide what is "good" and what is something else.
Why do you need the game to acknowledge your actions as good or evil? You don't know yourself? You realize that the ONLY way the game can acknowledge that is by adding ( good ) or ( evil ) next to the dialogue and then change your character sheet? Any consequances for your actions in the game are a completely seperate thing that is not related to alignment in any way shape or form.
If such a frame of reference does not exist, then my good actions are no different from your evil actions.
It's almost as if its subjective and adds roleplay value instead of taking it away.