Even in their dreams, they find no peace

Why is there pain and suffering in the world? said, “Suffering is a gift of God.” Well, it may be true that suffering tends to build character and makes a person emotionally stronger, but it can also sometimes result in bitterness and regret and may push the weaker person into criminality. However, in most cases, most people strive and would prefer to do without it, especially the extreme forms of it.
So why is there so much pain and suffering? You only need to watch the news to hear and see the way criminals and others continue in ever increasing numbers to kill, rape, violate and cause misery and destruction to others. Most of the time this is done because of a state of transient madness or anger or to revenge a perceived wrong, or to gain material gain or for some other skewed reason; but in most cases the wrong doer offers a reason for the violation.
The most interesting non-spiritual reason offered is this; the human race like most other living organisms is subject to the scientific rule of "". This terms was first used by British philosopher (who coined the term) in 1864 when referring to the work of , the world renowned English naturalist. Spencer, in his "Principles of Biology" drew parallels between his own economic theories and Darwin's biological ones, writing "This survival of the fittest, which I have here sought to express in mechanical terms, is that which Mr. Darwin has called 'natural selection', or the preservation of favoured races in the struggle for life."
==Survival of the fittest==
So if we accept this rule then the whole of the human race is in biological competition to stay ahead of the rest; it is like the "clash of the bulls" that we observe in many animal species in slow motion; Every person wants to get ahead of the rest in this biological race. The one who gets to the top reaps the rewards of dominance over the rest. Personally, I do not believe that the picture is that stark; fortunately, as a race, we still allow the weaker in society to continue in survive and in fact the weaker are offered extra support. 
However, on the other hand, when we look at the criminal element in society, this concept may offer one explanation of why some in society are so selfish in their behaviour. The theory appears to fit the observed behaviour.
==What does Sikhi say about this?==
In this Shabad by Guru Nanak in Sri Raag, the founder Sikh master asks the question: How can a person without any virtues within himself or herself find peace? The Guru tells us that the self-centred manmukh will continue in this cycle of death and rebirth perpetually if he or she fails to adopt a virtuous life; so