OK, no point arguing from scripture, then.
Proof of sin and man’s depraved nature is as close as your nearest newspaper - you don’t need scripture to see that there is evil in the world. But you appear to have posited that there are sin -free men: “God created us, individually...some good”. Do you have any evidence to prove that point? Can you point to one man created without sin?
I agree that what we perceive of as evil, is all around us...but I happen to believe that it is all part of God’s plan, mainly because He is the creator of all.
We would have to believe in the same thing to define sin, wouldn’t we? I don’t believe that man can offend God, as man is a creation of God, acting in accordance to God’s plan.