In a practical sense, what he’s saying is true - another nutjob will just replace him.
But the PSYCHOLOGICAL value of seeing Bin Laddin’s head dripping blood from the tip of a pike in Bagdad Sqaure would be immense - not that we do anything that.....EFFECTIVE.
Besides, if you make the career of being a leader of Al Quiada a sufficiently hazardous one, perhaps individuals will be less likely to announce themselves as such.
I think we've knocked off about 256 (or is it 2560?) of the #3 Al Qaeda guys. A very dangerous position, but they keep signing up for duty. LOL!
In any event, the perfect time to get bin Laden would have been BEFORE 9/11.