NO ONE should have to loose their family because they don't believe the same things as their family.
I am sorry you feel so much pain. It is VERY painful. The issue I have with it, is how can your family turn their backs on you? They are to treat you as if you were dead. I'm sorry to be so blunt, but if my family treated me this way, I wouldn't want them back in my life. EVER! It's just not normal.
I have witnessed a person being DF'd and shunned by their family and as soon as good Ole Mom and Dad are elderly, sick and flat broke the Elders will then seek out the DF'd person for help. WTF is that all about. I'm dead to you until we need you. That is sick!