Right and wrong are superstitions; your desires, however, are real. Those who cannot achieve their desires, or who despair of doing so, often compensate by constructing imaginary frameworks. For example, if you wish to live in a world in which no one exploits animals, it is moralism to judge those who eat meat immoral instead of setting about disabling the animal exploitation industry. People retreat into moralism as a sort of consolation prize, for it is easier to rule in the realm of good and evil, fictitious as it may be, than to come to terms with our limited leverage upon this world and yet persist in endeavoring to change it.