This is true whether they are in a Christian family where both parents are religious and then you have the even more bizarre yet wonderful situation where both parents are staunch atheists and the child knows their parents would be upset if they end up believing in God yet the pull towards God is so strong they end up converting. Is this simply because God wants certain people with him and the rest he wants nothing to do with? I personally don't have a problem with this because God wants who he wants. Some might say well why would he create me if he wanted nothing to do with me? Thats a good question and a very deep one and I don't know how to answer that but I know there is an answer for it and it will be answered one day.