A subjective opinion desperately trying to sound objective. Lacks significant data, or reasonable argument, beyond personal experience. A better education, or at least more reading could improve such conjecture. Research suggests we play strategy-based war simulation games today for the same reasons we played them a hundred years ago. Believe it or not, taking a piece in chess triggers about the same neurons in the brain that taking a headshot does in COD. As far as humanity's obsession with bloodshed, we are actually less violent then we were a century ago. As to why some seem prone to engage in the act of taking the lives of others professionally, that is more likely a result of mankind's tendency to embrace a sense normalcy based on environment, an adaptive behavior the undereducated are prone to.