the utility of a behavioral trait or of a physical feature of an organism in aiding the survival and reproduction of the organism.
If nothing else, religion has tremendous genetic survival value.
However, goods can be desirable for a reason other than survival value.
The ability to distinguish similar spoken sounds is clearly of survival value.
It is selfish behavior with no survival value for our planet.
Both aggression and more peaceful traits have survival value so we're likely to find both in humans.
And it may have survival value in that it promotes group cohesion, and helps leaders to organize and control the group's members.
For natural selection is oblivious to the survival value of camouflage and other adaptive strategies.
There is of course an alternative view, and that is that religion is a byproduct of other traits which have survival value.