Rooms Already Occupied in the House of God in Heaven

My Father’s house has many rooms; if that were not so, would I have told you that I am going there to prepare a place for you? ... John 14:2

Wow, ever since the days of Adam and Eve, Cain and Abel in the bible, more than a 100 Billion people have already lived and died on this earth. Let's assume half of them - 50,000,000,000 (Billion) dead souls have been saved to be in the house of God thus far. Isn't that a kind of a messy way to enjoy eternal salvation in heaven? 

What about the other 50 Billion souls already DAMNED by the devil in Hell?  

Am I to assume that since there are still some 8 BILLION living on this earth today - both GOD and the DEVIL are not as fully satisfied with their mission in life to SAVED and to DAMNED souls after death?  Poch Suzara Twitter# Facebook# Google#