They wanted a system that would essentially 'save them', instead of developing "alive" skill that would enable them to 'save themselves'...if that makes any sense. This very notion is at the heart of all "fixed" styles (particularly regarding OJKD here).
Excellent point, John! It boggles the mind to think that people expect a system or style to do the work for them!
But this is a common misperception of martial arts training in general. "I train, so I can kick ass!"
Unfortunately, that is only true if you are actually training by kicking people's asses. LOL.