Sure you have.
Hell was created for the devil and his angels.
Now maybe your question should really be, *Why did God create man if He knew that man would make poor choices and end up there?*
And maybe the Calvinists could also explain why God created man in the first place if it was His plan to send most of them there? Doesn't that then mean that hell was created for not only the devil and his angels but men also? Did God neglect to tell us that?
Are you saying that God changed His mind about the purpose of hell? That He planned to cast ONLY the devil and his angels in there and later decided to cast the wicked?
And maybe the Calvinists could also explain ...
I believe I have been very clear, more than fair, and have posted many references. I have answered all of these questions several times. If you truly would like answers to these questions I would suggest monergism.com which contains a wealth of teaching.
In looking back you and CB have stated indirectly:
2) God is not omniscience. God does not know whether a man will come to Christ or not. Someone who has not yet been born has not yet made their choice. [Note: there was the time corridor discussion but although God can look down through time, He can't do anything to stop it.]
3) The conversions of Abraham, Moses, Samuel, Paul and others are anomalies throughout history. These are special times when God had to step in to do something-anything-to get things moving.
4) God states that His desire is that all men be saved. According to your view "all men" means exactly that-all men. Yet we know from evidence around us that all men are not saved. Since you don't believe in universalism, the desires of God are not satisfied.
5) Hell is a punishment reserved for the angels. It was an after thought to cast disobedient men into the eternal flames of hell.
6) Some of Christ's teachings like, "You did not choose me but I chose you." are meant strictly for the disciples. Others are for all of us. The scriptures are unclear as to which is which.