Dr. van der Breggen, over at his site Apologia has done an excellent job of skewering the logic of moral relativism. And from the pen of a convicted psychopathic serial killer, Ted Bundy, takes moral relativism to its extreme conclusion.
"Then I learned that all moral judgments are ‘value judgments,’ that all value judgments are subjective, and that none can be proved to be either ‘right’ or ‘wrong.’ I even read somewhere that the Chief Justice of the United States had written that the American Constitution expressed nothing more than collective value judgments. Believe it or not, I figured out for myself–what apparently the Chief Justice couldn’t figure out for himself–that if the rationality of one value judgment was zero, multiplying it by millions would not make it one whit more rational. Nor is there any ‘reason’ to obey the law for anyone, like myself, who has the boldness and daring–the strength of character–to throw off its shackles…I discovered that to become truly free, truly unfettered, I had to become truly uninhibited. And I quickly discovered that the greatest obstacle to my freedom, the greatest block and limitation to it, consists in the insupportable ‘value judgment’ that I was bound to respect the rights of others. I asked myself, who were these ‘others?’ Other human beings, with human rights? Why is it more wrong to kill a human animal than any other animal, a pig or a sheep or a steer? Is your life more than a hog’s life to a hog? Why should I be willing to sacrifice my pleasure more for the one than for the other? Surely, you would not, in this age of scientific enlightenment, declare that God or nature has marked some pleasures as ‘moral’ or ‘good’ and others as ‘immoral’ or ‘bad’? In any case, let me assure you, my dear young lady, that there is absolutely no comparison between the pleasure that I might take in eating ham and the pleasure I anticipate in raping and murdering you. That is the honest conclusion to which my education has led me–after the most conscientious examination of my spontaneous and uninhibited."
"Ted Bundy, cited in Louis P. Pojman, Ethics: Discovering Right and Wrong, 3rd edition (Belmont, CA: Wadsworth/Thomson, 1999), 31-32."