I think it's not surprising at all. After all, most people are sane individuals who are unwilling to pour time, money, effort and risk their life in order to si

I think it's not surprising at all. After all, most people are sane individuals who are unwilling to pour time, money, effort and risk their life in order to simply cause suffering on other people. There simply isn't money in downing planes, so most people have no incentive to want to do it.