"but you also made alot of people angry at the USA foreign policy!"

Well the taliban and Osama Bin Laden made us angry by killing 3,000 of our civilians. Some people tend to get mad when the US kills a few civilians on accident, but you tend to ignore the fact that the people we are after are purposely killing civilians. We have the right to attack any nation that attacks us. And yes, I think the afghani people are better off now.