skripa
There is nothing wrong with you. You answered your own question
“the vast majority of high school and even seminary or yeshiva bachurim have no recollection of the twin towers,either before 9/11 or even memories of the actual day. “
Im willing to bet you have no recollection of the beis hamikdash, nor do you have a recollection of a time that chilul shabbos didnt exist.
I’m not saying you shoulnt care about the above ch”v. just why it is hard to feel the same way you do about 9/11 as the churban