Good vs. Evil

When defining good and evil, it is important to realize that it is impossible to define good and evil. This is for the simple reason that good and evil mean different things to different people, and in turn can not be defined. Many believe that something is "good" simply because it is beneficial to them. Some see good in everything, while others have never known it. Some believe good and evil are strictly religious terms, referring to God's grace and Satin's temptation. Most people have invented their own goods and their own evils. To me, the Pittsburgh Steelers are nothing more than evil. See what I mean? Everyone has their own subjective view as to what is good and evil. And to complicate things even further, many things and situations can be interpreted as both evil and good. For example, it is typically considered evil to kill a man. But what if one kills a man to save a child? Is it then justified, or is it both? I personally think what is good and evil is not for us to decide, especially since we have such a hard time doing so.