Good and evil is one of the most prevalent controversies in human history. An individual human being faces this argument everywhere, not only in the Bible, stories, and newspapers, but even within himself. Nowadays, peoples all over the world are suffering much more threats from terrorism and war, evil seems to be back on the upswing. Although some people argue that human beings are good, the causes why human beings are inherent evil may be traced from the following three aspects: wars, religions, and using of drugs.
One hardly needs analyze at human beings' history to know that an uncountable number of wars were fought because of mankind's jealousy, desire and hate which are human's inherent personalities. As well known, the American Civil War (1861-1865) was fought for the slavery, those slaveholders in southern states chose to war because of the profits. In Yugoslavia, serious relationship between Serbians and Croatians resulted in ethnic cleaning in the late 1990's; same as the western, Genghis Khan, the Mongol conqueror of China, who annexed central Asia, Iran, and southern Russia (1206-1227) to fulfill his desires.
Absolutely, war illustrates human beings' inherent evil personalities.
In addition, religions also reveal the inherent evil of human beings. "Every individual human being, without exception, is "under the wrath of God." That is to say, every human being is a slave or prisoner of his own inherent evil, perversity, and wickedness." (http://www.gcfweb.org/institude/nt/romans.html) There is not doubt that different religions have rules and regulations to justify one's behaviors. Perhaps on account of human beings' inherent evil, they founded religions in order to keep people as best as they can. What is more, "Gods of the different religions conflicted with each other." (http://geocities.com/mikkon463/goodnevil.html) The conflicts lead to bleeding in regions, even all over the world such as Crusades (11th -13th century) As a believer, he/she maybe feel condemned when he/she stands in front of him/her god.
Furthermore, the utilization of drugs may be a strong proof of humans' inherent evil. People know drugs do harm to their health, in other words, drugs can destroy themselves. But people can not help preventing themselves from being drug addicts, especially the young who pay less attention to their behaviors; they usually do things naturally. As the result of drugs using, the American Supreme Court decided a massive expansion of drug testing in schools is allowed. (http://supct.law.cornell.edu/supct/html/01-332.ZS.html) Perhaps inherent evil is the impetus making teenagers to try drugs. Evil behaviors may bring them happiness because people are inherent evil.
In conclusion, wars, religions and using of drugs indicate that human beings are inherent evil. The Seven Deadly Sins, which are Greed, Sloth, Gluttony, Pride, Lust, Envy, and Wrath, are human beings' inherent personalities. The developmental history of the society already tells us that man has evolved from the ape. But our beliefs, laws, and morality set us apart from the animal, we should try our best to keep ourselves behave as best as we can. Today, the threat of terrorism and war reminds us again that if we lose the capability of self-control, we would destroy ourselves finally.