Perhaps the way you put it is not too different from Jewish thought in respect to evil and what its purpose is. If this is from your own thinking than it is deep and well thought out. However I have always viewed the existence of something to be the evidence for the character and nature of someone or some being who existed and created the work.
In this case when we see nature we see God who created all kinds of living and non living things here on earth for man to have pleasure and enjoy the work of nature. And if man so chooses, he can reshape nature to his will that he can create from his own mind. In essence then each part of creation does as you infer reflect a certain part of God's nature.
And that it is only looking all the parts together to form a perfectly whole picture of God. Colosians 1:16 For by him were all things created, that are in heaven, and that are in earth, visible and invisible, whether they be thrones, or dominions, or principalities, or powers: all things were created by him, and for him: Romans 8:28 And we know that all things work together for good to them that love God, to them who are the called according to his purpose. If this is so then all that man experiences here on this earth whether good or evil is meant for our ultimate good and God's ultimate and sovereign glory.
Be well.
Well the question isnt clear and god did create Satan, bot god is love and understanding and he wil always be their for us. So yes he did create something that is destructive but then again he did create us and look what we ahve done we are just puppets for the devil and God knows that now the only thing humans can say is from 1) from experince 2) from books or stories and in this case its stories so we can only say what we think and what our opinions are there is a right answer but ONLY GOD KNOWS IT!
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.