When you become a God, will you use evil the way God does?
Be ye therefore perfect, even as your Father which is in heaven is perfect.
I dont know your view of evil or how you explain it but much of scriptures say that at some future in heaven, we will become as God and to me that would mean that we all inherit a new earth. Anything less would be less than what Satan has been given. Dominion over the earth. God would hardly give man less. I assume here that like humans, God would want his children to reach his level of thought and responsibilities and then some. God would then become God of Gods.
Believers, should have no problem imagining the scenario above and should be able to show why they would allow evil to exist on their own make believe world.
No definitive conclusion has ever been presented and accepted by any majority as to why God created and uses evil. To evolutionary theists, it must exist to further the survival of the fittest and what keeps man evolving. Without it we would face a greater evil. Extinction.
To some theists, it is to test us and weed out the unworthy or less fit. Yet many theists not believe in evolution even as God weeds out the less fit. Causing heavenly evolution, so to speak.
As a Gnostic Christian, I have no problem reconciling evil with reality. To me, within evolution, evil is good. Somewhat the way a God would think. I would not get rid of it as I see its ultimate requirement and in that sense, evil is good as it serves the greater good. Evolution. Theistic evolutionists agree.
Free will is not a valid argument if we must do evil to survive. Evolution demands both evil/competition and good/cooperation.
Would you allow evil to exist on your fictitious world, like God or nature does here in our real world?
If yes, why would you keep and use evil?
If no, how would your world work if you did somehow get rid of evil?