that thought crossed my mind too, but when i actually think about it, if some huge ass war did break out, i figure that the initial blasting would probably only put a dent in the ammount of people we have, radiation could kill off the rest, but alot of people live many many many years after they've been exposed to radiation... and in the time it took to kill mostly everyone that had radiation poisoning, a good sized chunk of the original casualties would already be replaced by more youth...

well, atleast all of that is why i didn't include nuclear war... even durring nuclear war, there's still over 6 billion people here... it would take alot of bombs to wipe all of us out, or even most... not saying it's not possible, just doesn't seem plausable to me...