The problem with this kind of reasoning would imply that something was lacking in God, but if He is a perfect self-sufficient being, how can there be a lack in Him? So was God lonely? 

To answer this, we first need to establish that God did not need us. If God never created us, it would not lessen Him at all. 

As Christians, we believe that God is triune, one God revealed in three distinct persons, the Father, Son, and the Holy Spirit.

All three persons co-eternal existed within the God-head before creation. There was already a perfectly loving and harmonious relationship within the Trinity.

God did not need to create us a group of rebellious, stubborn people – to feel better about Himself. 

He created us so that He could invite us into that which was already established and existed within the Trinity.

God now calls for you and me to be part of His kingdom, and He extends this invitation to us through His one and only Son, Jesus Christ.

1 Corinthians 1:9  (NIV)

9. God is faithful, who has called you into fellowship with his Son, Jesus Christ our Lord.

Lastly, the Bible says that God is love; and love by virtue does not focus on itself but others. He populated the earth with people from whom He could express the greatest act of love: self-sacrifice.

And through Jesus, He could give us the greatest thing in the universe: fellowship with Him.