One of the objections I have to moral arguments for staying in Afghanistan is that it is low-income youth who are being asked to take the risks of coming home in a body bag or minus a body part or with traumatic brain injury.
In World War II, Roosevelt's four sons all served--and they did not have desk jobs at the Pentagon. They were deployed overseas.
Currently, it is mostly kids from the bottom half of the income distribution who serve. Even when kids from more prosperous families serve, those kids get safer jobs. Kriner and Shen did the research on that.
So, if you think the US should stay in Afghanistan for moral reasons, then volunteer to go over there yourself.
Don't leave the bulk of the fighting and dying to working class kids from rural and rust belt areas or to inner-city kids who see the military as their ticket out of poverty.