I'm in the "want to believe" camp on UFO's. But one of the things that holds me back is the idea of UFO crashes. How could a UFO travel such great distances only to crash on Earth? It seems that UFO's are more prone to crashes than our airliners are. If these UFO crafts are so advanced and sophisticated to traverse the Universe and its many dangers & distances, why do the supossedly crash here on our planet when they reach it? What am I missing?