Living without God isn't easy. But its very difficulty offers one other consolation—that there is a certain honor, or perhaps just a grim satisfaction, in facing up to our condition without despair and without wishful thinking—with good humor, but without God.
In the New York Review of Books, Steven Weinberg writes about living and dying Without God.
The problem for religious belief is not just that science has explained a lot of odds and ends about the world. There is a second source of tension: that these explanations have cast increasing doubt on the special role of man, as an actor created by God to play a starring part in a great cosmic drama of sin and salvation
On consciousness
The problem is how to integrate the conscious mind with the physical brain—how to reveal a unity beneath this apparent diversity. That problem is very hard, and I do not believe anyone has any good ideas about how to solve it.
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I want just to offer a few opinions, on the basis of no expertise whatever, for those who have already lost their religious beliefs, or who may be losing them, or fear that they will lose their beliefs, about how it is possible to live without God.
Warnings for those who want to try it.
First, a warning: we had better beware of substitutes. It has often been noted that the greatest horrors of the twentieth century were perpetrated by regimes—Hitler's Germany, Stalin's Russia, Mao's China—that while rejecting some or all of the teachings of religion, copied characteristics of religion at its worst: infallible leaders, sacred writings, mass rituals, the execution of apostates, and a sense of community that justified exterminating those outside the community.
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Worse, the worldview of science is rather chilling. Not only do we not find any point to life laid out for us in nature, no objective basis for our moral principles, no correspondence between what we think is the moral law and the laws of nature, of the sort imagined by philosophers from Anaximander and Plato to Emerson. We even learn that the emotions that we most treasure, our love for our wives and husbands and children, are made possible by chemical processes in our brains that are what they are as a result of natural selection acting on chance mutations over millions of years. And yet we must not sink into nihilism or stifle our emotions. At our best we live on a knife-edge, between wishful thinking on one hand and, on the other, despair.
To survive without God or a god-substitute, he recommends
Humor, the ordinary pleasures of life and the high arts
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He admits the loss of great consolation
The more we reflect on the pleasures of life, the more we miss the greatest consolation that used to be provided by religious belief: the promise that our lives will continue after death, and that in the afterlife we will meet the people we have loved. As religious belief weakens, more and more of us know that after death there is nothing. This is the thing that makes cowards of us all.