C notched and dropped???

[66-PMD-GMC]

Look, I am not bagging on anyone here, just trying to understand.
It seems the largest percentage of people starting threads on this forum are C notching and or dropping their trucks.
I can't personally see the allure but to each his own.
My question is; does everyone here realize the compromise in structural integrity they are making by hacking up the frame like this??
In a rear or side impact these frames will buckle and fold big time.
I recently saw a Z notched truck that was reinforced and built in such a manner that it seemed the more logical way to "slam" a guys truck.
My other question is; is everyone doing this (slamming their trucks) because it improves the looks of the truck and the handling or is it just a fad that the hobby is going through??