I know back in the day, that was taught, that if the parents were going to be destroyed, so would the children. I just can't easily find reference to anything. This thinking has been used to justify some egregious behavior towards children and their parents such as exclusion of children from JW family - why worry, the end is near, all will work itself out then - the end didn't come though.
How would that work if the parents are divorced and one remains a JW but does not have knowledge/custody of the child - would a kid suddenly be popped into the arms of another parent. How about the grandparents or other family, could they suddenly have their household grown by a half dozen kids? What about the emotional damage that comes with that?
I know again, back in the day, it was explained to me that Jehovah would simply erase the memory of the "bad things", but that seems even more crazy, especially given the footprint children and people leave behind. Why would you not rebel in the 1000 years of purification, would you want to live knowing your life was a lie? Everyone else has 2 parents, but you have just 1 or none at all, logically speaking, you would have to find out that there were 'some' that were erased, who were they, what were they like, what did they do wrong. Or perhaps you can't think those thoughts and won't have free will to ask questions. Paradise seems closer to George Orwell's 1984.
These things are so messed up if you think about them.