The euthanasiasts have planned it this way. Your dad's case is, I think, probably very common. Every hospital and health care facility regularly brings living wills and advance directives forms forward and puts pressure on the patient to sign them. Months before my dad died they asked him to sign them every couple of weeks. He repeatedly told them no. I am grateful to him for showing me that you can die just as well without them.
in my state, its MANDATED that you ask the patient if he has a living will or similar, there is no requiremnt that he have one nor is it required that he sign up "quick"......
maybe you have heard of families suing because daddy or mommy was resuscitated even though there was a "living will" at home in the safe deposit box.....
the lawyers and the courts have made it impossible .....
Geez....we have one state that voted to allow people to commit suicide by doctor, and we have families mad because dad's living will was fulfilled and mad when dad's living will was not fulfilled.......
there is no way to do the "right" thing in today's climate....