Sts. Ann and Joachim are a great witness to us of surrender our desires, our human wills to God and seeking His Divine will in our lives. For His plan is so much better and glorious than anything we could concoct.
“Rejoice Ann, that you were strile, and have not born children!” St. Damascene tells us in the Office of Readings. And, then we have St. Elizabeth who was barren and later had St. John the Baptist.
Abraham and Sarai did not trust in God and took their infertility into their own hands, and Ishmael was born, who would later give rise to the Muslim religion.