This means there is literally no reason to choose the good path over evil,...
This is only true if you are powergaming and not roleplaying. If you roleplay your character, then that is reason enough to choose the 'good side' if that's the choice you want your character to make.
In the grand scheme of things, you can become particularly powerful by the end of the game and the 3 stat points and slightly gimped 'good side' weapon makes little difference.
