Jeffrey Dahmer? Sorry, I don’t consider him any kind of exemplar of Christianity. Nor Newt Gingrich, to be frank; his endorsement of Dede Scozzafava made him dead to me.
The point was that evolution(ism) offers no rational basis for morality; if all we are really is meat byproducts of random events as evolutionites claim, what difference could moral conduct possibly make?
A second point might be that even a psychopath can eventually learn to see through junk science and brain-dead ideological doctrines...