Depends on the parents and the behaviour of the kid.
In my experience it's not common for a child to be kicked out unless the relationship has really broken down to a large degree. Where I have seen it I have to say that the child has often been behaving really badly but I am sure this is not always the case since much depends on the attitude of the parents.
Sure, religious differences and having a DFed child does cause conflict and family disruption but I think it would be stretching things to suggest that children are summarily thrown out of the family home for relatively trivial things or simply for saying they don't wish to attend meetings any more. It can and does happen but is not the norm in my experience - usually the opposite. It's not until a child is DFed that their living arrangements are called into question.