see i just wouldn't take the bait; i wouldn't rise to the challenge. how can you have morals in a world without god? ok you'd better explain to me exactly how you get morals in a world with god. by sheer decree? is goodness simply overwhelming power? i don't know; your speculations have grown somewhat too cosmic; you want to be assured at a level that is just not realistic given our actual limitations, our predicament. however, this momentary spasm of scientism that we're in is just as speculative, just as much sheer assertion as the most rococo theological system. the problem though with taking something on faith or with the discipline of evolutionary biology is that the people who do it are not particularly insightful when they come to examine their own foundations. dawkins dogmatizes like an archbishop.
at any rate, expect from science the sort of thing that science can deliver, and not the same sort of thing you might get from speculative metaethics.