It's really very simple to understand....but then this would depend on how big ones God is seen as. Small Gods always need something else besides themselves for the men who cannot accept He alone is the Almighty...when something else fills other voids.
Sometimes I think that this obsession with Mary gives some men a sense of protecting her, if they aren't married, it fulfills the need for a partner...or the 'other woman' if married, they can freely associate with without getting into trouble. Which would explain so many varying images of Mary down thru the ages....each to his own liking.
More mushy-headed thinking. God doesn't need for anything. If God is to become Incarnate, by the Christian meaning of God Incarate, a mother is needed.
Mary as the vessel
Mother. The word is Mother. Please remember this before next May when you go looking for a Vessel's Day Card.
Mary is the mother of Jesus.
Jesus is God.
Mary is the mother of God.
Problems even saying this are symptoms of problems with the orthodox Christian theology of the Most Holy Trinity: heresy. This is where deficient theology concerning Mary lead you, always.
*****He used Mary as the vessel to accomplish that work on behalf of mankind.******
IOW, He had need of a mother:)
Mary is who she is because Jesus, Her Son, is who He is.
It’s really very simple to understand.