The Lord God's Promises of Forgiveness and Healing Continue

In Genesis 18, God says it is not good for the man to be alone. This is the first occurrence of something in the Scriptures that even in this time before sin is said to be not good. Adam by himself cannot produce the children that God desires for him to have. He can't propagate the human race. If it wasn't good for theMan to be alone then what good did God desire to create?