I, too, want the world to be a better place. This is my reason for wanting people to understand and accept evolutionary theory: I believe that their salvation may depend on it! How so? By opening their eyes to the dangers of pandemics, degradation of the environment, and loss of biodiversity, and by informing them about some of the foibles of human nature. So isn’t my belief that belief in evolution is the path to salvation a religion? No; there is a major difference. We who love evolution do not honor those whose love of evolution prevents them from thinking clearly and rationally about it! On the contrary, we are particularly critical of those whose misunderstandings and romantic misstatements of these great ideas mislead themselves and others. In our view, there is no safe haven for mystery or incomprehensibility. Yes, there is humility, and awe, and sheer delight, at the glory of the evolutionary landscape, but it is not accompanied by, or in the service of, a willing (let alone thrilling) abandonment of reason. So I feel a moral imperative to spread the word of evolution, but evolution is not my religion. I don’t have a religion.
– Daniel Dennett, Breaking the Spell (p. 268)
Beliefs make it easier to go through hardships, even make them pleasant.
You go against popular feelings; you criticise a hero, a great man who is generally believed to be above criticism. What happens? No one will answer your arguments in a rational way; rather you will be considered vainglorious. Its reason is mental insipidity. Merciless criticism and independent thinking are the two necessary traits of revolutionary thinking. As Mahatmaji is great, he is above criticism; as he has risen above, all that he says in the field of politics, religion, Ethics is right. You agree or not, it is binding upon you to take it as truth. This is not constructive thinking. We do not take a leap forward; we go many steps back.
It is necessary for every person who stands for progress to criticise every tenet of old beliefs. Item by item he has to challenge the efficacy of old faith. He has to analyse and understand all the details. If after rigorous reasoning, one is led to believe in any theory of philosophy, his faith is appreciated. His reasoning may be mistaken and even fallacious. But there is chance that he will be corrected because Reason is the guiding principle of his life. But belief, I should say blind belief is disastrous. It deprives a man of his understanding power and makes him reactionary.
Open your eyes and see millions of people dying of hunger in slums and huts dirtier than the grim dungeons of prisons; just see the labourers patiently or say apathetically while the rich vampires suck their blood; bring to mind the wastage of human energy that will make a man with a little common sense shiver in horror. Just observe rich nations throwing their surplus produce into the sea instead of distributing it among the needy and deprived. There are palaces of kings built upon the foundations laid with human bones. Let them see all this and say “All is well in God’s Kingdom.” Why so? This is my question.
One of my friends asked me to pray. When informed of my atheism, he said, “When your last days come, you will begin to believe.” I said, “No, dear sir, Never shall it happen. I consider it to be an act of degradation and demoralisation. For such petty selfish motives, I shall never pray.” Reader and friends, is it vanity? If it is, I stand for it.
via Why I am an Atheist.