I have trouble thinking that, no matter what the impact of 9/11 was, or how many people died, that it was any worse of a situation than Operation Shock and Awe, which resulted in the deaths of ten times the amount of completely innocent, defenseless civilians.
I'm not saying 9/11 wasn't a horrible tragedy, as it truly was, but the fact that people are joyously celebrating the execution of the 'Man responsible', while completely disregarding the fact that their own country's fear and hatred-ruled revenge war has taken the lives of so many more innocents is, quite frankly, disgusting.
Yeah, he was a horrible human being, and yeah, his actions resulted in several thousand civilian deaths, but when compared to the mountains of civilian casualties in the Middle East just 'Looking' for the guy, I find it hard to feel any sympathy.
There is NEVER a good reason to sacrifice ten thousand men, to avenge the deaths of two thousand, ESPECIALLY when there are a hundred thousand innocents between your ten thousand men, and the one responsible.