More food for thought. This, from Watchtower:
"If the father or the mother of a family is a believing and practicing Christian he or she brings merit to the entire family of children. Paul writes: "For the unbelieving husband is sanctified in relation to his wife, and the unbelieving wife is sanctified in relation to the brother; otherwise, your children would really be unclean, but now they are holy." (1 Cor. 7:14, NW) Therefore this proves that minor children of Christian parents are indirectly sanctified or counted worthy of protection in God’s sight until they reach the age of individual responsibility. Hence in this day of final judgment since 1918 parents are responsible for the final destiny of their minor children. When Armageddon strikes all minor children who are not under such "family merit" arrangement will meet annihilation with no hope of a resurrection." The Watchtower, 1952, 1/15 p. 43 par. 22 Training Children for Life in the New World
While the above is not a recent Watchtower statement, it has (to the best of my knowledge) not been superceded by any of their so-called "new light". Here, the unbelieving mate -- obviously an adult by any definition -- is somehow protected simply because he or she is married to a believer. The minor children, too, logically fall under this same protection when Armageddon comes. Makes sense to me.
Definition of a minor child varies slightly depending upon where the child resides. From Wikipedia, "In the United States, where the age of majority is set by the individual states, minor usually refers to someone under the age of 18, but can be used in certain areas (such as gambling, gun ownership and the consuming of alcohol) to define someone under the age of 21."
Knowing this, why is it that Watchtower has inexplicably encouraged earlier and earlier baptisms for children when they've told their flock that minor children have the same protection as that of an unbelieving spouse?