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.