Sin is the problem sir. Everything you mentioned is explained by sin. And everyone is a sinner, including all of us, and everyone who has ever lived save one.
But Christ is the answer to that sin. Though His life, death, and resurrection we are saved from the wrath that is to come. It would be foolish to let the actions of sinful men cause us to ignore the gospel message and thus reject the very Son of God. He lived a perfect righteous life because we couldnt. He died and suffered the penalty against sin that we deserved. So that if we repent and believe in Him I can be saved for the righteousness that is His is given to us, and the punishment that we deserve is given to Him. In short, if we believe in Christ, God treats Him as if He lived our life and turns and treats us as if we lived His!
This is what is most important Newt. While men have done evil things, it doesnt change the gospel message. We are sinners, the penalty for sin is death, but Christ died so that we would not have to face that penalty. Why worry about all that mess you just mentioned and instead trust in Christ alone. Unlike me and the rest of us, He has never sinned or done any evil. He is the only way.