Because kids might miss their dads and the dad might die . Their dads might become missing in action or MIA. They could become killed in action or KIA. The kids don't want their parents to die and have one parent like me I have one father no one deserves that. That is painful.
The United States should have remained out of World War I because the conflict was, by definition, a regional dispute among struggling European countries. The only reason we got involved was because our ships were attacked while protecting munitions supplies being sent to Great Britain. The United States should have remained neutral and not shipped goods to anyone in order to stay out of the war. Unfortunately, war is good business. The United States benefited economically from the war as the allies purchased American goods and supplies to maintain the war effort.
The sheer fact that America was upholding the lend-lease policy with GB at the time was enough in of it's own. Further involvement in the war required America to start accessing the private sector for war production. As the nation became enveloped in the ordeal, it thrived in an economy bent of making war materials and thus was the first step of America's place as a global security superpower. America not only won this world war, but the next, and thus the ego of the nation was inflated and has led to a degradation of appropriate action as seen with Vietnam and the nine-year war in Iraq.