Do you Christians look at Adam as he is portrayed in the Bible (and the Koran and Torah, for that matter), do you look at what he did, bear in mind the countless thousands of years of suffering that is traced back to his action, and conclude that he is the most "evil" human being who ever lived?
No, not at all; the Fall was bound to happen. The fall is actually a commentary on the idea that we are free willed people, and that we are all inclined to disobedience, even if only for the excitement and for the easy way in which we are 'seduced' into a perspective.
Adam & Eve, actualizing their freewill, then are cast out of paradise -- rightfully so, and they must earn their way upon the land, live by the sweat of their brow, and undergo a different form of existence.
You know, there is even this idea in traditional Christianity that Adam & Eve were like the ultimate humans.
They were taller, stronger, more intelligent: the ideal type.
They are not thought of as particularly evil or wrong.
Christ is even referred to as the Second Adam. As if Adam is not such a bad parallel, and not some "evil" figure that we have to dwell on.