And why did they attack us? Oh, it's because we attacked them and destroyed the countryWhen the Taliban and their allies launch attacks on our soil and that of our commercial partners and allies that's very much our problem and that's precisely what they did and its not like they wouldn't have continued had they not been chased off. Plus, there is this whole human rights catastrophy thing that has to be taken into account. If attacking someone to save a portion of its population from human rights violation is often very touchy and risky, so can be innaction. Countries don't live in bubbles and neither should they.
America is not the world police and has no business telling anyone how to live. Hell, we violate the rights of sovereign nations all the time, so we have no room to talk about human rights violations when we've toppled democratically elected governments and propped up brutal dictators that murdered their citizens (multiple Latin American nations). We have our problems to address, which are extremely serious and going to lead to the end of the republic if we don't focus on them. Those people didn't ask for our help and don't want it.