No, we don't need it. The rules most of us disrespect are routinely are not useful in the specific cases (eg I'm not going to wait at a red light in the middle

No, we don't need it. The rules most of us disrespect are routinely are not useful in the specific cases (eg I'm not going to wait at a red light in the middle of the night as a pedestrian, only as a driver). Almost all people are actually nice to each other, at least where I have been.