The question was pretty straight forward, the answer should not be hard:
No one here has said that the law should prevent anyone from doing everything medically possible to delay death regardless of suffering. That is not a choice we wish to take from any patient, but you pretty clearly want to take the position that those who wish to end their suffering should be prevented from it (and specifically prevented from having assistance). This is applying your doctrine to others who do not follow it against their will.
You've quoted the doctrine and what I assume is some sort of explainer of the doctrine, but you haven't given a reason why your doctrine should override other's choices and rights. So I ask in a slightly different form:
Why does the doctrine of your church override the rights of non-members regarding their end of life choices?