I believe in the concept of God but what does God do that is actually supernatural?

I wonder why you feel the truly evil and soulless do not contribute just as much to further humanity than any one else does. When one looks at the overall pitcher of all the genocides that have happened over the years,, at the end of the day ha it made any bad effects on humanity. I do not mean to sound cruel, but if humans didn't die [no matter which reason used] humans would be shoulder to shoulder on all the land mes starving to death.