We will be like good citizens leaving a wilderness campsite, clean and pristine, as though we were never there. Afghanistan will return to its natural state of Islamic oppression.
That may be the highest use of that land. a planetary open-air insane asylum.
I say we give them a head start by annhilating what infratrucute there is as we leave. Power plants, waste treatment, water supply, bridges, dams. Blow it all up real good as we pull out.