In Rothbard's 1974 book Egalitarianism as a Revolt Against Nature and Other Essays he argued that: "Equality is not in the natural order of things, and the crusade to make everyone equal in every respect (except simply before the law) is certain to have disastrous consequences." In it, Rothbard wrote, "At the heart of the egalitarian left is the pathological belief that there is no structure of reality; that all the world is a tabula rasa that can be changed at any moment in any desired direction by the mere exercise of human will."
It appears that the Left tend to have a manic-depressive attitude towards this world, swinging from one extreme to another – they lack the Christian golden mean of “being in this world but not of it”. In their MANIC phase they are unconditional and uncritical in their worldliness, but when things start going wrong (either they get crushed politically or grow tired of empty fleeting pleasures), they enter their DEPRESSIVE phase where they become Buddhists or Nihilists or Schopenhauerians, and start enthusing for universal suicide (or murder-suicide). The old libertine goals of wine and women get replaced by euthanasia and nirvana, Eros is taken over by Thanatos (see Proverbs 8:36).
But those who fail to find me harm themselves; all who hate me love death.