Have you read Steven Pinker's Better Angeles of Our Nature? Violent death per 100,000 people has gone down significantly in the last 100 years even including WWI and WWII. As we move up Maslow's hierarchy of needs, we understand the value for cooperation of competition. Those who do want to fight wars (usually the sociopaths who get voted into office) must align with banks to get the funding they need. It's a sick symbiotic relationship of greed and destruction.