To me, any physical pain experienced during the dying process would be preferable to potentially decades of pain that I would have to experience if I stayed alive. I believe that many people get over their fears when they get desperate and all that they want is to escape. They just know that it's time to leave and they have this feeling of certainty and have no more doubts. I think that someone cannot force themselves to be ready to leave. Suicide certainly is difficult as after all we have to deal with the SI. None of us should have to suffer as we leave this world, we have already been through enough in life. Dying should always be peaceful.