Why do Skeptics doubt the existence of God?

From: Why I Am a Skeptic about Religious Claims

By Paul Kurtz

First, because the skeptical inquirer does not find the traditional concept of God as "transcendent," "omnipotent," "omnipresent," or "omnibeneficent" to be coherent, intelligible, or meaningful. To postulate a transcendent being who is incomprehensible to the human mind (as theologians maintain) does not explain the world that we encounter. How can we say that such an indefinable being exists, if we do not know in what sense that being is said to exist? How are we to understand a God that exists outside space and time and that transcends our capacity to comprehend his essence? Theists have postulated an unknowable "X." But if his content is unfathomable, then he is little more than an empty, speculative abstraction. Thus, the skeptic in religion presents semantic objections to God language, charging that it is unintelligible and lacks any clear referent.A popular argument adduced for the existence of this unknowable entity is that he is the first cause, but we can ask of anyone who postulates this, "What is the cause of this first cause?" To say that he is uncaused only pushes our ignorance back one step. To step outside the physical universe is to assume an answer by a leap of faith.

Nor does the claim that the universe manifests Intelligent Design (ID) explain the facts of conflict, the struggle for survival, and the inescapable tragedy, evil, pain, and suffering that is encountered in the world of sentient beings. Regularities and chaos do not necessarily indicate design. The argument from design is reminiscent of Aristotle's teleological argument that there are purposes or ends in nature. But we can find no evidence for purpose in nature. Even if we were to find what appears to be design in the universe, this does not imply a designer for whose existence there is insufficient evidence. The evolutionary hypothesis provides a more parsimonious explanation of the origins of species. The changes in species through time are better accounted for by chance mutations, differential reproduction, natural selection, and adaptation, rather than by design. Moreover, vestigial features such as the human appendix, tailbone, and male breasts and nipples hardly suggest adequate design; the same is true for vestigial organs in other species. Thus, the doctrine of creation is hardly supported in empirical terms. Another version of the Intelligent Design argument is the so-called fine-tuning argument. Its proponents maintain that there is a unique combination of "physical constants" in the universe that possess the only values capable of sustaining life, especially sentient organic systems. This they attribute to a designer God. But this, too, is inadequate. First because millions of species are extinct; the alleged "fine-tuning" did nothing to ensure their survival. Second, great numbers of human beings have been extinguished by natural causes such as diseases and disasters. The Indian Ocean tsunami of 2004 that suddenly killed over two hundred thousand innocent men, women, and children was due to a shift in tectonic plates. This hardly indicates fine tuning-after all, this tragedy could have been avoided had a supposed fine tuner troubled to correct defects in the surface strata of the planet. A close variant of the fine-tuning argument is the so-called anthropic principle, which is simply a form of anthropomorphism; that is, it reads into nature the fondest hopes and wishes of believers, which are then imposed upon the universe. But if we are to do this, should we not also attribute the errors and mistakes encountered in nature to the designer?

Related to this, of course, is the classical problem of evil. If an omnipotent, omnipresent, and omnibeneficent God is responsible for the world as we know it, then how to explain evil? Surely, humans cannot be held responsible for a massive flood or plague, for example; we can explain such calamities only by inferring that God is malevolent, because he knew of, yet permitted, terrible destructive events to occur-or by suggesting that God is impotent to prevent evil. This would also suggest an unintelligent, deficient, or faulty designer.

Part II soon.