The entire NATION was under attack, not just your stupid selfish ass. It was not an attack on one city it was an attack on the entire United States. I'm glad your friend is over it, I can't imagine how painful it must have (and still is) to deal with. He chooses to deal with 9/11 by getting over it, other people cope with this day by celebrating the people that were lost and the servicemen that fight for the country.
Every single person is going to deal with a tragedy of this magnitude a different way, quit being a fuckass and thinking the way you go about your day on September 11, 2012 is the right way and every needs to follow step like your some fucking pied piper