On our planet Earth 8.7 million species are living. And all the livings kill others to survive, except humans. The only reason animals kill others is hunger, they kill to live because otherwise they would starve to death. But as humans are considered, we can see many wars throughout history. And the most common causes for wars are conflicts over resources, clashing ideologies and struggles over power. So we can say that our civilization leads us to be more violent. As Albert Camus said “There are causes worth dying for, but none worth killing for.” Everybody knows that war is a very bad thing and it causes lots of people to lose their lives. Also they want it to be stopped because thy don't want to lose any relatives. But countries keep fighting.
Countries spend a significant amount of their budgets to guns. And lots of people criticize the money spent on guns and the wars. But ironically the very same people buy guns, swords and other violent toys to their sons. This brings us to the dilemma ; is war thought to us or is it in our nature.