You not only need A Living Will, you also need someone who will accept Power of Attorney to make sure your living will is carried out.
If you don't have a Living Will, or have someone with the Power of Attorney, the doctors have no choice and are obligated to wait and keep you alive until further notice and that could be years.
What happens to your things, all those treasures you've collected over the years? You get taken advantage of, your finances start to dwindle, nobody seems to care, where is God?
That's why you need a Living Will and a Power of Attorney.
Hopefully, you will have taken care of matters while your were able.