Islam believes that human being is a very sophisticated creature...
Islam believes that human being is a very sophisticated creature; and since he has not made his own body, nor did he create the world in which he lives, he, therefore, is not the best candidate for making laws about himself. Common sense says that when you a buy a complicated equipment (for example, a computer), you should use it according to the "instruction manual" prepared by the manufacturer of that particular machine. To learn the computer by trial and error is not the smart way.
Similarly, God as the Creator of man and the earth knows better how the human being should live. The "instruction manual" that God sent for us is known as the Qur'an. But human being is not just any ordinary machine; rather he is more complicated than the most advanced computer a human can ever produce. So God did not only send the Qur'an -- He also sent an instructor known as (PBUH). The Prophet of Islam brought the Qur'an to us and also provided practical examples in his own life.
According to Shi'ah Islam, after the Prophet, the Imams of Ahlul-Bayt are the protectors of the Qur'an and the interpreters of its laws. The Superiority or God-made Laws over the Man-made Laws At this point, I would like to point out the superiority of the Islamic laws over the man-made laws. Man-made laws are by necessity influenced by the law-makers' social and racial biases.
The United Nations Organisation is the best example of how policies are enforced only when it suits the interest of the super-powers. The rule of the game in man-made laws is not honesty and justice, it is "the might is right". God-made laws are superior because of the following facts: God is above class status; God is above racial prejudice; God is above the gender rivalry; God, as the Creator, fully knows the humans as well as the world in which they live.
God-made laws will be just and based on fully informed decision. Let me demonstrate the superiority of God-made laws by using the example of capital punishment. The secular system always swings according to the mood of the people: sometimes, the people feel that capital punishment for murder is not right and so they pressure their representatives to vote against capital punishment.
But when crime rates increase and serial murder cases occur more frequently, public opinion changes and the legislators are influenced in favour of capital punishment. Actually both sides of this issue reflect the Judeo-Christian basis of the Western society.