Windows In Heaven (Children)

I know sometimes that clouds bring rain, in wintertime it's snow, and spring is good because it makes the pretty flowers grow. I know that God is everywhere and angels all have wings, that dogs can't talk and bunnies hop I know so many things. But why do daddies go away? It makes kids and mommies sad. Are there windows up in Heaven? Did I do something bad? My Mommy said it's not like that... that children all are good. Sometimes daddies just can't stay even though we wish they could. She said Daddy loves me most of all, not to think he doesn't care ... and he sees me from the windows. God just needs him more up there.