Morality systems don't break games; they do encourage and reward metagaming, though. If you can only get certain outcomes, or certain reactions from NPCs or companions, through attaining certain scores then the morality system becomes a game in its own right and this can have a serious effect on game immersion.
I prefer games where morality, reputation etc. is invisible to the player save by effects in the game world. I don't like meters or numerical scores, I like just seeing things play out.
I prefer games where morality, reputation etc. is invisible to the player save by effects in the game world. I don't like meters or numerical scores, I like just seeing things play out.