Do you actually HAVE children??? ANYONE who has raised children of their own KNOWS that infants and children are NOT "little angels"! Infants wake you up at 3:00 AM just to play! The first thing a child learns is to lie, and anyone who has observed preschool and kindergarten classes KNOWS how cruel the youngsters are.
Children are NOT without sin, and are NOT righteous.
EVen so, God has this strange way of keeping people from harm by "snatching" them out of harms way. He can take them directly to Heaven -- although, to us left on earth, it APPEARS as though they died! Given that a child in Sodom was exposed to homosexuality, lesbianism, bestiality, orgiastic sex, and probably pedophilia, it stand to reason that God COULD have simply taken the children out of harms way -- by "rapturing" them BEFORE the destruction of the cities.
SURELY you are familiar with this famous quote from the bible:
"There is no one righteous. No, not one!"
It doesn't same "men only" or women only" or "except children".. NO ONE is righteous.