The total amount of suffering per year in the natural world is beyond all decent contemplation. During the minute that it takes me to compose this sentence, thousands of animals are being eaten alive, many others are running for their lives, whimpering with fear, others are slowly being devoured from within by rasping parasites, thousands of all kinds are dying of starvation, thirst, and disease. It must be so. If there ever is a time of plenty, this very fact will automatically lead to an increase in the population until the natural state of starvation and misery is restored. In a universe of electrons and selfish genes, blind physical forces and genetic replication, some people are going to get hurt, other people are going to get lucky, and you won't find any rhyme or reason in it, nor any justice. The universe that we observe has precisely the properties we should expect if there is, at bottom, no design, no purpose, no evil, no good, nothing but pitiless indifference.
It's sad to think how Dahmer himself had met a tragic end at the hands of his inmate Christopher Scarver. It was tragic to think how he died at only 34 years old and is burning in Hell at this very moment. While some wicked people do live to grow old but some of them are destined to die young. He may have foolishly thought he had all the time in the world and what he did was just proof of how far atheism can rot a person. Why he did what he did may be a result of believing that because there are no moral absolutes then he could do what he wanted to do.
It should be a sad reflection on the problem of saying there are no absolutes yet using absolutes to criticize others. What he did is no better than what Islamic extremists or the bloody history of the Roman Catholic institution. Murder is still murder and nothing makes any murder right. Dahmer's sad legacy is something that atheists should think how they contradict themselves and a possible sad end for their disregard of moral absolutes.