For those with parents still in the group, what will their future hold?

They will grow old and die in The Family. 

They will eventually get out, and still have time to build a pension fund for themselves. 

They will receive a family inheritence on which to retire. 

The Lord will magically provide a lottery windfall as reward for their years of dedicated service. 

They will spend the rest of their lives on welfare. 

Me and my "apostate" siblings will have to care for them. 

I don't know and I don't care, I have my own future to worry about.