Am I being crazy, or am I just thinking about what could have caused it?
Insanity isn't a black and white line. Rather it is a long spectrum of grey, everybody has some issues that are are irrational about to one degree or another.
Being mentally ill is just having an irrationality of sufficent force and nature that you can't deal with everyday life.
As for saying you would have beefed up security after the attack on the Cole in Yemen, I think your overstating hindsight a bit. But considering the lack of oversight on student visas is a real issue.
Jay