But didn't people learn from the Vietnam and Korean wars that they might be unnecessary for defense even if the government says so? Is it that a new generation

But didn't people learn from the Vietnam and Korean wars that they might be unnecessary for defense even if the government says so? Is it that a new generation forgets the lessons from the previous one? In that case, why not blame the soldiers - if there was little popular support for them and it was seen as a shameful or failure of a job then maybe fewer would be sucked into it. I heard that in WWI, soldiers were naive and didn't understand what they were getting into. Now though, there's no excuse. Everyone learns history at school and can use Google. So the decision to join should be fairly obviously likely to lead to doing bad things. The US has been nearly continuously at war since WWII, it's not going to suddenly stop when your son joins the army. Also, how do Americans reconcile that "my family" attitude with the fact that the people they're fighting are also somebody's sons and brothers? It's not seen as equally noble to be an Isis soldier as a US one. What makes the US special other than "my country"?