I'm not going to downvote you for saying that you don't feel anything while watching it, nor do I think anyone else should. It varies from person to person. I was 11 years-old and living on an Air Force base in Germany, so the second plane hit when I was coming home from school. That day I remember all of the parents in the same building as ours saying that this will be a day we'll never forget. And I haven't. Hell, I remember what I was wearing and what I was eating for a snack.

I think the 9/11 videos really resonate with people that were not only old enough to understand the gravity of the situation, but especially those that were on American soil where everything was fucking chaos (from what I've heard). It not only brings back the memory of fear that they were living in because they didn't know if there would be more attacks and where, but also sadness watching the videos like this where you can hear someone scream in terror because they are seeing somebody's mother, father, brother, sister, etc. falling or burning to death- and then the collapse itself. I can watch these videos now and not get goosebumps, but I still can't fathom the terror and sadness that everyone must have felt that day. I was still young and pretty sheltered at the time so I'm not sure I really comprehended what it meant right away, but I now watch and think, "that was someone's family, a loved one that was taken from them in a horrific way," and that's why I guess it's "chilling" for me.

Like I said, I don't think you should be downvoting for not thinking it's "chilling", but at the same time I don't know why it's annoying. It's a real, raw reaction to what they were seeing, and they reacted far more better than I could have knowing what was happening.