Never heard of moral reletavism, huh? Saying good and evil exists, you're just blind sounds exaclty like the god exists, you're just blind attack. I should clear this up- There is no cosmic sense of good and evil, it is completely relative to ones society or even the individual. I take good to mean helpful to life and evil to mean harmful. By accepting those terms however, I am still not saying that good and evil really exist. They are just adjectives, like beauty and ugliness. Of course you don't say "Beauty and ugliness exist, you're just too blind to see it," because (hopefully) you understand that there is no universal, or absolute beauty and ugliness. If I may change a cliche in order to help you to understand- Good is in the eye of the beholder.