Evil is a subjective human assessment dependent upon the person. For example, most people in America view 911 as evil. Many in the Islamic world view America as evil and 911 as deserved retribution.
There are literally limitless examples of this type clearly showing that evil is a subjectively human construct.
Rob writes:
I believe it is absurd to label everything as natural.
As has been pointed out in another thread, "natural" has many definitions. You could try tidying up your definitions, but a better approach might be to eschew a focus on definitions and instead just explain your position in greater detail, which you're going to have to do eventually anyway.
I think what you're trying to argue is that qualities like evil, deceit, envy, greed, etc., are departures from what is natural. But if we're all evil, as you argued in another thread, then everyone is a departure from the natural. If no one actually conforms to your concept of what is natural, then it only exists as a sort of ideal and not as a reality.
--Percy