so, I'll say this,
look at human existence
without human existence, we have nothing...
so existence brings good and bad, right?
well then is nonexistence better because it doesn't bring bad (or evil)?
I don't believe so; existence as an opportunity to good is the only good aspect to this universe
So ultimately, the opportunity for good is most important
So then, on a smaller scale, what is good?
Well, if human existence is the opportunity of good, then anything that contributes to this opportunity is good as well
And this is where the world fails
People, in bondage by corrupt leaders, poverty, war, crime and other things that hinder human advancement are the things that take a stance against human existence (and the opportunity of good) and thus are deemed "evil" at least by my opinion and by the idea that human existence is good
So, I guess to sum it up...
Good is for the sake of humanity.
Evil is against.