Technical impossibility aside, I take issue with the whole assumption that there exists a Hollywood-movie "bad guy" who would take it upon himself to create a k

Technical impossibility aside, I take issue with the whole assumption that there exists a Hollywood-movie "bad guy" who would take it upon himself to create a killer virus. Yes, there are terrorists who do not shirk from mass murder to achieve their goals, eg. flying planes into the heart of the enemy's military and financial centers. But creating a virus that that respects no religion or national boundary and will kill everybody it touches serves no rational goal. The only reason for somebody to do this would be if the extermination of the human race was the actual goal, and that's just so far-out that even certified nutcases like Japanese subway sarin attackers Aum Shinrikyo would blanch. The ideology of these groups is invariably that, while the rest of the human race may be doomed, they are the Chosen Ones that will survive, but viruses don't play dat. It would thus only make a smidgen of sense to do this if you had an absolutely solid antidote/vaccine that would ensure that your group can survive the onslaught... and if that exists, the rest of humanity can develop one as well.