in is truly accepted that money is the only option in emergency, but it should be according to the situation, what situation you gave in that money will also not be useable. everything has its own usage.
I think that in the real emergency cases even the cash couldn't be useful, because the person's life will be in danger and then people usually don't think about using cash or bitcoins, they usually in this cases think about survive..
what you are telling is not right because when your life is in danger ( what type of dange should be knowing) that time the danger can be handled by cash only not by bitcoins because for bitcoin the danger should also be knowing about bitcoin and cash everyone know about it