When my husband and I first married, we were well indoctrinated by the zero population growth teaching, so we were going to only have two children. We did, both girls, and life went on for a few years. We began foster care, and after a baby I loved left, I begged for another one, and we had our son, almost seven years after our youngest daughter, then we had a 'whoops' and had another son. Again, life went on, until I met a lady who introduced me to a new way of thinking: children are a blessing from the Lord, and happy is the man who's quiver is full of them. So after studying on my own, we threw away the birth control (I was in my 30's) and I had five more pregnancies, resulting in three live births.
Life went on some more, until I met some children who were my oldest daughter's foster children. We got our foster/adopt license, and ended up with only one of the sibling group, the new baby. By this time we were in our 50's. We continued to foster after adopting our son Luke, ended up adopting again, our foster daughter Angel-Leah, and now we have her new baby brother, who we hope to adopt before the year is out.
Do we want more? We will take anyone the Lord places here in our home that we feel he wants us to keep. It's not hard to hear his voice, and if you are faithful and not violating any commandments, what you do will be blessed.
The Lord says children are a blessing and a reward, our heritage. Why would we want to limit that??