And why fly unmanned missions? Its often said "You couln't find anyone willing to fly that thing" but of course for the priviledge of flying into history, any number of volunteers could always be found. Imagine the inspiring example, the publicity! Even with an occasional spectacular failure, folks will line up for that. Modern institutions quash this impulse for adventure and glory. A nation that used to revel in riding-a-barrel-over-Niagara now makes it illegal. Is it a strange twist of modern psychology/PC?