What Good Does Saying the Rosary Do?

I am convinced that every prayer, every act of obedience, every Rosary contemplated, every Divine Mercy Chaplet offered is lovingly recorded in Heaven and the graces produced are doled out as needed to hungry and hurting souls for their repentance and consolation.

I may never know who receives the graces from my devotions, but just knowing that someone at some time either in the past, present or future is the beneficiary, is enough for me.