Did you get a good view from the tour bus in those countries? Its a big assumption Im making there, but very few people would have had a chance to fully experience and understand the cultures in all those parts.
The first thing you should do to bring your head to a more realistic level, is understand that war is a part of human nature, the day we evolved into man we have been fighting eachother. Fortunately, we have people who are willing to fight wars, putting their own lives on the line, in the name of freedom and peace. Yes yes I see the irony, peace through war but sometimes a relatively quick and sometimes bloody battle is better than generations of torture and suppression.
You seem like the sort of person crying now about how bad the occupation is, but you also seem like the sort of person who will cry about what would happen to the innocent people there were the taliban in control (kissed a man - off with your nose! etc.). I only say this because it seems you value human life, but other people dont value it like they should and put their 'god' infront of it.
Also Im interpreting your posts that all afghans dont want us there, which simply isnt true. There are plenty of examples of local support, we can offer the local afghans a more peaceful and humane way of life allowing their local business and communities to grow with a lot more freedom than the taliban would.
The fact is, you may think its a crime we are there, but the real crime would be if we werent. Its a hard piece of pie to swallow, but its a sad fact of humanity.