[My2Cents]

Dawkins dispensed with God a long time ago. All of this mad spinning he does is an attempt to fill the vacuum. Truth be told, I bet Dawkins doesn't really believe most of it, but he's compelled to promote it because of the worldview he's adopted.

[MitchellC]

As can be seen in his final paragraph, he is obviously conflicted about accepting the ideas that he himself promotes, although he chalks it up to a lack of "enlightenment," that is, he knows that it's reprehensible and isn't yet "enlightened" enough to escape that knowledge:

Why is it that we humans find it almost impossible to accept such conclusions? ... mental constructs like blame and responsibility, indeed evil and good ... But I fear it is unlikely that I shall ever reach that level of enlightenment.