I entirely understand that. You had every right to be enraged. So that is not even up for debate. Neither is the fact that you needed to take action at the culprit.
But you are a civilized society, right. You don't go nuts like a beast and knock everything around because your enraged. You know OBL was behind it. Sure you had every right to take him out like you eventually did by using a precision operation. My issue is you plastered a stone age country - Afghanistan because they had no defence against your weapons and then you have just got sucked into a war of nationalism. You can't change societies overnight. Whether you or anybody else likes it Taliban have significant support within the Pashtun ethnic group. And as your now accepting only a negotiated settlement can be made. It's all over now but I think America could have gone around the problem in a more smarter way. Bush did your country disservice.
You know how you complain about Pakistan double dealing. Well in the analogy I gave if a pro Putin governmernt was installed in Mexico City I suspect Washington would have serious problems digesting that. Ditto Pakistan. Yes Pakistan supports the Taliban. Not because we think they are angels. But to quote one of your countrymen "they are bas*tards but they are our ba*stards". Much as you supported the Mujihadeen of the 1980s who were for the most part pre-cursor to the Taliban for your strategic reasons we did the same.
You have issues about U.S. bombing Afghanistan but you do the same thing when the Taliban which as you said supports attacks Pakistan, especially when they targeted the civilians or military. Good Taliban and bad Taliban whichever you see.
Its a good analogy with pro Putin installed in Mexco City just like Putin invaded Ukraine just over possible pro western government. Just like you said, Russia would have serious problems digesting that.