Karma, the worst comeback ever...

In order for Karma to exist there must be a little human action called in, who goes by the name, judgement, which we all know many people are good at..
Karma is a universal belief, and since when does the universe pass judgement? I don't believe it can since it is not human..
We humans use the word Karma whenever we are mad at people.. Its our favorite comeback when we really just have nothing else to say.. What goes around comes around right? Well that is a judgement..isn't judgement of others wrong? Who are you to decide who has done wrong to deserve to be slapped in the face? Just because feelings are hurt doesn't make you the judge, jury, and executioner. There is nothing in the world that is calculating our behavior and guarenteeing that Karma will get us. I don't wanna hear God either.. WE are responsible for our actions. When we make mistakes we pay for them.. When we hurt someone, there is consequences, it is called SCIENCE, duh! It is the law of human action or Praxeology. You cant just call out, Karma and feel like you have put someone in their place. Bad and good happen to ALL people. Just because you believe you are always good and doing right, doesn't mean you are exempt from the bad karma. We are humans, we do good and dumb things all the time. Yelling "karma will get you" is just going to make karma boomerang you right upside your head so look out!