I like this until I think about it. Without some overriding authority (could be government, could be God, could be societal mores) the guy who has a vested interest in taking away my right to life is already dead. It behooves no one else to prosecute the case, there is no profit in it for them, no moral impetus if they simply didn't care for that guy I shot either. (He was an Indian anyhow.) As a murderer, I have given up my right to life, but there is no one who cares a whit about taking it from me.
Thanks for posing an intelligent question.
Every human being needs the right to his autonomy. Therefore, the proper condition in which to pursue his life is one in which he has the right to have his own choices in life be free from coercion by others.
That is the motivation and justification for defining a political system in a society of men to guarantee that condition. It is the motivation and justification for designing a system that will remove the use of force from human value exchanges, to place it in the hands of a neutral third party institution and to restrict that institution's ability to use that force for anything but defense of that right.
The need of that right for every man never ceases. Their right to prevent, stop, and punish the use of force never ceases to be necessary, regardless of how many perpetrators die or get away with their crime or continue to commit crimes. The task of the government is always to do its best to eliminate force for the benefit of all men.
When men cease to care about removing force
in principle and in perpetuity, they will cease to have a just and moral government. They will first get the Bushes and Obamas, then Pinochet and Chavez, followed by Stalin and Hitler, culminating in Pol Pot.
How does the Rational Man act when acting moral is against his perceived self interest and not acting moral costs him nothing at all?
Morality is that set of principles one must define to serve as standards for the infinite choices of action that constitute one's life. By definition, the moral is the good—that which contributes to a life of a human being consistent with his nature. The immoral is inherently the bad that detracts from that life.
The notion of a moral act contrary to one's self interest is a self contradiction.
The notion of a moral act contrary to one's
perceived self interest indicates an erroneous perception of one's self interest.
This was my counter claim earlier. Not only that we are not rational, but that things work out better because of it.
Beware of switching your contexts. Rational has two meanings in this discussion.
1) "Man is a rational animal" means that his specific and unique means of survival is a rational faculty—a capacity that enables him to organize an infinite number of sensory perceptions into broad concepts and concepts of concepts and so on to amass the necessary knowledge to survive and flourish.
2) "That man is rational" means that he is using the faculty in 1) correctly.
All men are always and ever rational animals, but only sometimes rational.
Unreasonable is critical. Instinct, impulse and so on are a useful, nay, essential, part of the package.
Human beings do have automatic functional, physical actions over which they have little or no control. Human beings have automatic psychological actions that appear to be instincts, but are actually responses to prior evaluations of oneself and the rest of the universe in relation to oneself. Those can be altered and controlled.
Human beings do not have instincts like the other animals that genetically predetermine their responses to their perceptions or other stimuli. As I have previously explained, to advocate such is self refuting, because to be useful, it has to be advocated as being
true. But you cannot have both truth and instincts, because there would be no way to distinguish those assessments of your thoughts and actions from each other.