I usually don't like comparing Berserk to literature because it seems to go nowhere but I was reading Nietzsche's "Genealogy of Morals" and it seemed to explain exactly the kind of person Griffith is and that he isn't "bad". Nietzsche explains the "rancorous man" and the "noble man". The noble man (read Griffith) is one who looks inward for happiness and acts instantly on what he feels is right. On the other hand, the rancorous man creates a "slave ethic" where his life is based on an outward force of contempt. He makes an analogy of a bird of prey (Griffith of course) and lambs and the fact that the lambs dislike the bird of prey. It is normal that the lambs don't like the bird of prey but that doesn't mean they're "evil" and certainly doesn't the mean the lambs are good just because they are the opposite. The bird of prey loves and respects the lamb because it is tasty food just as Griffith loves Guts for what he does for him. I wouldn't quite say that Guts is a lamb though, but most people in Berserk are. Nietzsche would admire a character like Griffith for his unwavering sense of self and his perserverance to act on his dream. I think most people hate Griffith because, I dare say, they agree with the slave ethic.