The fifth great benefit of belief in God is that it brings about a thorough peace of mind, which is useful in every walk of life. In fact, one cannot do justice to anything unless he is at peace with himself. An atheist is always bedevilled with dissatisfaction, disquiet, and doubt and is never satisfied with his condition—unlike if he were wise and religiously inclined. He keeps wondering what if his findings are wrong and the universe did have a Creator and Master. Atheism is, in fact, a negative philosophy and is not based on any positive evidence. That is to say, an atheist is not in a position to claim that he has the categorical evidence that there is no God. All that he can say is that he has found no evidence that there is a God. The concept of atheism is in disagreement with the deepest philosophies of human nature; this is why he always harbours some doubts about his belief. His very own nature, his enlightened mind, and his surroundings all contribute to him feeling confused, vexed, and worried. Consequently, his quest for peace is never accomplished in this world.
Belief in God, on the other hand, is established on a strong positive basis and human nature finds comfort in it. Therefore, a believer in God is relatively more certain and resolute; he is not perturbed by the worries of the future and this peace of mind helps in all aspects of his life. Moreover, an atheist does have a deep down concern that if there is God, that he is disadvantaged by not believing in Him. Conversely, the possibility that there may not be a God does not disturb a believer as he would have nothing to lose. In short, whichever way you look at it, belief in God leads to peace of mind and disbelief to discontent, anxiety, and uncertainty. The Holy Quran says:
Hearken, ye people! It is only in the concept and remembrance of Allah that hearts find comfort.
Peace of mind is an essential prerequisite for every task and nothing can be accomplished without it. We can, therefore, affirm that belief in God plays a major role in the progress and welfare of the world.
1 Surah ar-Ra‘d, 13:29.