Shooting Down Satellite -EV, I bet

How much you want to bet that the probability of the falling satellite actually killing someone is, in expected cost terms, much lower than the $100 million or whatever will be spent firing missiles. I'm not saying I know this. I'm just thinking it seems really, really unlikely to me that the fuel when it burns up really will turn into the death gas they're worried about. But what do I know. I'm a social scientist, not a real scientist, which is code for I really can't be of much value to anyone.