So we shouldn't honor and remember the 3k ppl who died in a little over an hour in the world's 'superpower country'? And we shouldn't remeber the various historical buildings that were destroyed?

The way people think was greatly changed by 9/11. The world was majorly different before 9/11. We live in a Post-9/11 world and will continue to untill the people who experienced it firsthand pass away. Until they pass their recollections of the event will drive their thoughts. All people who witnessed the event in any shape or form were changed by it. That can't be forgotten.