I haven't felt this shitty since 9/11.
By the way, when people say stuff like this, it irks me. Were you supposed to be either on one of those flights, the Pentagon, or in the Twin Towers, or was someone you loved killed in the attack?
My Dad was supposed to be, but his boss got sick so the business trip was postponed (It only took Federal investigators 3 years to confront the company about why my Dad's meeting for that Tuesday, which had gone on for every tuesday for almost a year, was cancelled that day) which was the only reason he was not caught up in all that shit, but even I don't feel like I should complain. If someone you did love was killed, or you were supposed to be there, maybe you could feel like shit, but otherwise... no.