Surely
Surely rather than be disgusted, you should find it grounding. If it serves any purpose, this sort of thing should remind us that regardless of the political and ideological clashes that led to 9/11, and ignoring the global shit-storm that followed it, whatever your views on Bush's war on terror, that day was a day when a lot of ordinary people lost their lives or had them irrevocably changed. Ordinary people who'd just got into work, had their coffee, maybe just started checking their emails and prepared for the daily trudge, with only the prospect of going home to their loved ones to keep them from going crazy. Suddenly, through no fault of their own, the world exploded.
Everything that has followed was a result of that day. Almost a decade later it's really easy for those who weren't there to think of it as just another event; to get blinded by the big picture and forget to look at all the little ones.