What national interest does it serve the USA to continue to fight in Afghanistan?

Please exclude poppie production and junkies as a raison d’etre.

What strategic value does Afgha have for us? I am aware the bad guys propagate there but they’ll just go somewhere else and we’ll always have bad guys anyway. Additionally it does not appear reasonable to think we can forever keep the AQ and other bad guys from getting the bomb.

So why continue? Don’t get me wrong. I would drop nukes on them for a week but the world would stop us. I’m not anywhere close to a peace advocate but I also think you need to be selective in choosing your wars, and I just don’t see the border areas as that strategic, or for that matter the entire country.