I don't think people necessarily forgot about 9/11 itself, I think they forgot about WHY it happened, WHO did it to us, and how it felt that morning. I remember watching the entire damned thing all day long, and I'm not going to forget how it felt until the day I die. After that, I decided to join the military. They wouldn't take me because I had just had lung surgery. So now I'm in training to become a fireman, inspired by the 343 that died on 9/11.
And no offense lead, but it seems that you were the first one here to start throwing around political agendas and such in this thread.