shadow: "It seems to me that the "morality" of evolution should dictate that the individual does what benefits self. Why put community above self unless it benefits self? If an attempt were made to apply to a community, then it would make sense to cull the herd of non-producers like elderly or disabled."
"Ethics" or other courses in humanities/philosophy discuss these things with many different points-of-view, and the class discussions range from fascinating to bizarre. Even courses on religion can be enlightening when considering Eastern religions which are more about thinking and actions, but less about the role of God.
In brief, a strong community is a huge benefit to "self". In a society without common or written law and enforcement, nobody is safe or prospers. Sure, you may think you're benefitting yourself when you steal your neighbors stuff, but what about when he knocks you over the head with a rock while you sleep? Did your "taking what I want" attitude really benefit you? I don't think so. Without even introducing God into the equation there is a strong foundation for ethics and morality.
As far as the thought that evolutionists would gladly see the termination of the elderly or disabled, the fact is that evolutionists realize that they could be disabled at any moment and they will become elderly. It would be of little benefit to themselves to endanger their own future happiness and survival. A person doesn't have to be in fear of "god's jugdment" to understand that bad policy that may benefit me today could undo me tomorrow.
Our classes did have some interesting discussions about the development and role of religion on ethics. The part that was of interest to me as an exJW was that religion has been such a powerful force on undermining the seemingly inherent traditions of ethics and morality... (the blood issue, child molestation, and disfellowshipping come to mind as examples where life and family are highly valued and protected). As far as the evolution issues, we have inherited a large and complex herd mentality (such that we're able to wipe out every other species), and we've developed a huge and complex brain.
One of the bizarre things in current US politics is the republican party's pro-Christian posturing, yet they're taking the lead in letting poor children go hungry, live in dangerous neighborhoods, and get inferior educations.