Having never fought, Prager instinctively knows that killing is fine and those silly soldiers that literally lose their minds after killing their fellow human beings are just misguided leftists. Prager, if he was on the front line, would not have their problem. Sadly, he had to pass up the chance to serve his country to concentrate on getting rich. He blames leftism for the human being's innate revulsion to killing. During World War 2, it is well documented that a high percentage of US troops could not pull the trigger to kill in their first engagement, leading to high casualty rates among the raw recruits. You can't blame that on leftism, those were Americans raised in the traditional regligious culture Prager venerates.