It is desire of every parent that their children get success in Deen (religion) and Dunya (world). Quran is a guidebook not only to achieve success in the life hereafter but in the worldly matters too.
So we can say that by making their children memorizing the Quran the parents can make their dreams come true. This book discusses this thought in details with reference to Quran, Sahih Hadith and Authentic sayings of the Salf.