Devotion to the Blessed Virgin Mary

Devotion to the Blessed Virgin is not a sentimental thing, although it involves sentiment. It is not just for those who have some kind of unmet emotional need. It is theological. It is intimately tied up with the faith.

At the foot of the cross Jesus gave us Mary as mother. All of us. Because we need her metaphysically.

I'd wager that the main problems in Protestantism stem from their rejection of devotion to the Blessed Mother. And even among Catholics. 

Even Islam venerates her!