You must be so pleased that your God has managed through 'careful nurturing' to create and preserve all those lovable little things (Ebola, HIV etc etc) that have threatened our survival, both individually and as a species - while at the same time your God, no doubt, is behind the skills and expertise of those who seek to find solutions to these problems: you must be especially thrilled to read about, say, new strains of drug-resistant bacteria!
We live in a world of opposites.
For love and compassion to exist, there must be anger and hatred.
For beauty to exist, there must be ugliness.
For light to exist, ther must be darkness.
For life to exist, there must be death.
For good to exist, there must be evil.
For Heaven to exist, there must be hell.
For God to exist, there must be a devil.
For good health to exist, there must be disease.
For everything that is created, there is unwanted waste.
There seems to be a universal law of reality that everything must be balanced in some way.
By sacrificing Himself on the cross, God has tipped the balance in our favour.
To accept this favour, we need to use our God given gift of free will.