THE ATHEIST MISSIONARY SAID:
Daryl was obviously a sociopath, like roughly 5% of the general population (though the vast majority of sociopaths enever kill). I commend a reading of Martha Stout's The Sociopath Next Door for those interested in this kind of behavior.
Daryl is a calculating rationalist. He begins with a popular secular premise, then conducts himself accordingly.
Premise: This life is all there is, so make the most of it.
So he’s prepared to lie, cheat, steal, and kill to achieve that objective so long as he can get away with it.
But if you wish to treat atheism as synonymous with psychopathology and sociopathology, who am I to differ?
What can an atheist say to convince Daryl that he did anything truly and objectively evil? Well, most of us (i.e. the non-sociopaths) would tell him that what he did was nasty. But the key is that we would be making our own moral judgment based on our evolved instincts and learned moral judgments.
i) Evolutionary ethics is fraught with philosophical problems:
ii) At best, evolutionary psychology fosters the illusion of right and wrong:
What you Bibleists fail to realize is that even if you decide to follow the moral precepts of some holy book or priest, you are still making your own judgments. Each individual has inevitably to rely on their own individual moral compass - their own sense of right and wrong - in weighing up to whom they should listen and whether to accept the moral advice they are given: Law (ibid, p. 79).
I already dealt with that objection in my review of The Christian Delusion, where Hector Avalos trots out the same lame argument. Try again.
I don't not profess to have any expertise in Calvinism but Maharashi Rauser wrote on his blog today that: Not only did God predispose human persons to behave in certain ways, but he is the primary cause of their acting the way they do. based on this view, Daryl should either blame lordy for his nasty predispositions or, better yet, just sincerely repent on his deathbed and receive a metaphysical "get out of jail free" card.
I’ve frequently dealt with moralistic objections to predestination. Either present a counterargument or shut up.
Also, don’t bother to come back here unless and until to you can tackle the problems with evolutionary ethics in the linked material. No free lunch for infidels.