Can’t leave Afghanistan now - it would turn into a terrorist hub with ISIS, Al Queda, and the Taliban running it. We didn’t play to win in Afghanistan, and this is where we are. Plus, the Afghan soldiers trust us & are fighting with us. They’d be slaughtered if we leave.
Think of all of the resources and life that have been misused in Afghanistan and the ME while our border is still not secure and our infrastructure crumbles. We're going further into debt, perhaps to the tipping point. Those are primary factors in the fall of great civilization throughout history.