If you are religious person, then yes you would believe that evil exists in the world, because you are convinced of its powerful and all mighty opposite God's Good. However, if you do not, then we are faced with some difficult questions and issues to resolve. What is evil? It is an intangible thing. We know it when we see it or hear about it, but we cannot touch it. When someone murders a child or harms an animal, we perceive that their actions are bad and wrong, but does that mean because their actions might be perceived as evil, does that make the person evil?
Working around murderers as I have, you would expect the presence of evil, yet these men and women were simply human beings who had committed terrible acts due to mental illness or psychological issues. When people knowingly and willingly kill or maim or damage or abuse, when they do this with full knowledge, perhaps this is evil, but again, whether evil exists without mankind's minds, we cannot know. If there is a God, there is probably a Satan. Some believe Satan is the world for our inner enemy who makes us do bad things. Perhaps this is where evil lies.
Working around murderers as I have, you would expect the presence of evil, yet these men and women were simply human beings who had committed terrible acts due to mental illness or psychological issues. When people knowingly and willingly kill or maim or damage or abuse, when they do this with full knowledge, perhaps this is evil, but again, whether evil exists without mankind's minds, we cannot know. If there is a God, there is probably a Satan. Some believe Satan is the world for our inner enemy who makes us do bad things. Perhaps this is where evil lies.