You asked the million $ question & it bothered me since 9/11!
I believe its a repeat of shibud mitzrayim “Nistimu Einei Yisrael”. We are so engrossed in the materialistic based & the natural course of events that we closed our eyes (nebach!) to all the calls. Most of us give a crechtz and say “Oy terrible tragedy” but it didn’t happen to me, I’m still alive….How could we?! It’s got to the point where it’s inevitable that by just moving on that things can change. Who are fooling? Ourselves!
Once we work on bain adam l’chaveiro, only then can we achieve bain admam l’makom b’shleimus-in its full state. May the Gadol Hador and all other cholim have a refuah shlaima, and if we treat our chaver properly (say Good morning!!!) only then can the geulah process begin!