Evil vs. Good

Just to start out, I don't think anybody is truly "good" or "bad". Though people are often given these titles, it is completely based upon the viewpoint of the person giving the names. In order to be a "good" person we are expected to fight human nature when it comes to things such as lust, greed, envy, etc. But after all, we are human, and we are bound to make mistakes or bad decisions in our lives. To go even deeper into this argument, who even decided the values of a "good" person? Was it religious leaders or just a basic understanding amongst everyone? No matter what lead to it we will always have an idea in our minds of someone that is a "good" person even though they may be the very opposite in someone else's view.