Do people forget who created the Taliban and why? It was created or at least taken under the wing of the ISI of Pakistan in order to unify Afghanistan. The biggest reason being that it would give Pakistan a puppet government and a safe western flank in order to turn its concerns to the bigger enemy: India.
Bhenazir Bhutto supported the rise of the Taliban in Afghanistan when she was Prime Minister because a pacified country to the west could bring economic benefits to Pakistan (read: pipelines)

Another example of blowback being a bitch for America.