I think this could have been avoided also, if the Taliban didn't give Osama and his organization the ability to plan, train, and operate his terror company under their supervision and protection.
Osama funded the Taliban against us as surely as they protected him. You or me against Mike Tyson? Not a pretty fight
But if you poke him in the eye or try to stand between him and someone who did you should expect to get your ear biten off.
All of the pictures from Kabul may not have been genuine, but I don't doubt that some were. The Taliban's support came from their ending the tribal infighting. The Taliban are mainly Pashtun but that doesn't mean all of the Pashtun are Taliban.
Politics are very different and this is exactly why negotiation wouldn't have worked with the Taliban. They were not interested in giving up Osama Bin Laden or the consequences. If the bombing hadn't started we'd be exactly where we were before it started, with the Taliban saying Osama couldn't possibly have done it because he doesn't have the resources and they've been watching him.
At least now relief workers can safely get into Afghanistan and not worry about being taken prisioner.