Psychologists and researchers believe that human behavior is determined by the genes and the kind of environment we live in. While the role of Nature and Nurture has always been accepted, even the best of upbringing and education couldn’t exterminate the innate vindictiveness of human beings.
It can be discerned in the innocent squabbling of toddlers; it gets sharpened when they grow up to face the competitive world of sports and schooling and slowly it becomes a part of their personality.
Probably the real reason is rooted in the evolution of human race, which had to struggle to survive against all odds and challenging circumstances. In modern times, when people are blessed with all kinds of materialistic and spiritual choices, revenge refuses to slacken its hold on human psyche.
Why? What could be the possible reasons?