I think most of us were raised with a basic sense of right and wrong. It may have been based on religion, but not necessarily. Every society, whether they believe in a supreme being or not, has rules of conduct. It's a part of what makes up civilized.
For those that missed learning right from wrong while growing up we have laws and a criminal justice system.
Are you saying that the only thing keeping you from being a horrible person is fear of god, and not your regard for your fellow man?