ES teaches that our having earthly parents necessitates our having Heavenly Parents.
"Discourse by Apostle Erastus Snow (August 10th, 1884)," Deseret News, October 22, 1884, 2
To [the Saints] this great truth is most precious, precious to contemplate, and it is an inexpressible privilege to be able to draw nigh unto Him and say ‘Our Father’ in simplicity and faith, knowing that He is indeed our Father and that we are His children. And immediately this great truth is impressed upon our minds, we very naturally begin to associate with it the idea of mother. This is a natural result of our knowledge and experience of human affairs; that earthly tabernacles owe their origin to mother as well as to father; that the two principles are associated together, and that by the union of the two principles, male and female, God has ordained an increase, not alone to his children but to all other branches of the animal kingdom . . . the two principles going hand and hand together. Without the two principles being thus united there is no increase. Further, we are taught that things on earth are organized after the pattern of heavenly things. Need it, therefore, be a marvel and a wonder to the world that we should irresistibly be carried forward to this conclusion—that if we have a Father in heaven we have also a Mother there.