This is my answer to those who claim rationality is always self directed amd who promote naive versions of moral nihiism
Humans were not designed by evolution to be selfish.
Instead, evolution has equipped us with a suite of motivations that tend to promote the persistence of our genes. These motivations are directed towards ourselves, our kin, the cooperative societies we inhabit, and the ecological and cultural conditions on which those societies depend.
Humans are unusual because we have evolved mechanisms that make cooperation stable beyond kinship. We reward cooperators, punish defectors, build reputations, enforce norms, and create institutions that discourage free-riding. These mechanisms shift the costs and benefits of behaviour so that cooperation is often the expected outcome.
Individuals can sometimes benefit from exploiting cooperative systems, through free-riding or deception. However, these strategies succeed only when they are rare, because human societies actively detect and discourage them through reputation, reciprocity, punishment, and social norms.
The claim that human nature is simply self-interest confuses what is possible with what humans are adapted to do. We possess selfish impulses, but also equally fundamental motivations for fairness, reciprocity, loyalty, empathy, and stewardship. These are not constraints on human nature but part of its evolved structure.
Human motivation is therefore not defined by selfishness but by participation in cooperative social systems, alongside kin-directed and self-directed motives, all of which belong to the same psychological architecture.
