Distinct Black Distinct White Makes It Grey

When we're young, we have such distinct ideas about what's 'good' and what's 'bad'. But when we grow up we realize that 'bad' has so many humanly attractions that if we embrace evil, it just makes us human. And no one minds being human.
Life is such a mystery na? We are humans, but we are supposed to fight against being completely human. Weird isn't it?