You obviously haven't got a clue as to why our forces are in Afghanistan in the first place. The oil and gas are in Turkmenistan: right next door. The oil and gas need to be brought out - via a pipeline through Afghanistan - to the sea and the markets in Pakistan and India. American needs to control the flow of this material. Specifically it needs to ensure that trading in these materials is done in US Dollars. If the route: for the pipelines, cannot be secured through Afghanistan, then Russia or IRAN, will be only too happy to provide alternative routes. This gives control of all this material away. The oil and gas will not then be traded for US Dollars - and the dollar will lose its status as the world's first reserve currency. If this happens the American Empire will collapse.
It was never about Osama bin Laden.