This is one of those things that you can never explain to anyone; that's what I want to explain - one of those free-association moments with connections that dissolve when you start to try to put them into words.
Words
Even when our death is imminent, we carry the image of ourselves moving forward, alive, into the future.
Death, Image
You want a child because it is a link in the bridge that you are building between the past and the future, a cantilever that holds you, so that you are not alone.
Children
He had built his own future brick by brick around himself but there were no doors or windows, at least that was the way it seemed at the time he had thought to himself, I am locked in, it was like one of those ghost stories where you wake up and you are sealed in a coffin.
Brick, Future