As we have seen earlier in this thread, someone that did have a living will CHANGED THEIR MIND and WANTED TO EAT, but they were denied food.
What would you do if your husband said I change my mind, I want food. Would you let him have food and water or would you tell him he didn't know what he really wanted and besides he already made out that living will and it's too late, he's not getting any food?
I would not have a living will that was activated if I am conscious. Living wills for me assume the inability for me to speak for myself. And no, I can't imagine rejecting any such request.