God needs to know we are taking another person into our lives. Talking to God, our guardian angels or saints. Sometimes we forget and neglect our prayer. It gives us hope. If we have a really bad day prayer can give us the strength to go on.
Prayer forms a habit.
That habit can strengthen us. It is something we have always done. It is something that has come to us from God's Son. It is our worship. Tradition is something you do not lightly disregard.