Wars break out for various reasons .According to experts, the main reasons or factors that contribute to wars are human greed for wealth and intolerance. the effects of war are both physical and psychological . Human society are deeply affected by wars as , as residential areas, public infrastructure , hospitals and the very basis of human existence is destroyed .Wars bring untold miseries as well as political and economical instability.Peoples lives and daily existence come under threat .Population is displaced and have to constantly move about for security reasons . Some are scared and some are emotionally and some physically for life.
Thousands of people die in the war zone leaving behind their families behind and many a thousands of people live physically handicapped for the rest of their lives .It was reported that out of 60 million European soldiers who were mobilised in the world war I , 8 million people were killed 7 million were permanently disabled and around 15 million were seriously injured . Residential areas become hard to live in. the public infrastructure is destroyed and the hospitals become packed with patients . Wars not only destroy the mankind but also natural resources creating a lot of pollution . Trees are cut on an extensive scale to meet the war demands . Iron and steel are also used on a large scale . Nuclear weapons like the ones that were used on Hiroshima and Nagasaki not only killing two hundred thousand people but also causing severe damage to the natural environment. Even today people suffer from diseases caused by the radio activity. Further more , the disease are are inherited by their off springs
So there is actually nothing to gain from the war. The only technical beneficiaries are the businesses that supply the various elements of war, like weapon manufactures. But that too doesn’t last too long. War causes over expansion of these business, but the end of war quickly decimates these businesses as the sales channel that supported the infrastructure no longer exists.