When our Heavenly Father placed Adam and Eve on this earth, He did so with the purpose in mind of teaching them how to regain His presence. Our Father promised a Savior to redeem them from their fallen condition.
Ezra Taft BensonThe world teaches birth control. Tragically, many of our sisters subscribe to its pills and practices when they could easily provide earthly tabernacles for more of our Father's children. We know that every spirit assigned to this earth will come, whether through us or someone else. There are couples in the Church who think they are getting along just fine with their limited families but who will someday suffer the pains of remorse when they meet the spirits that might have been part of their posterity.
Ezra Taft Benson