[WithinReason]

What other incentives can you imagine for Homo Sapiens?

[oxydite]

Well... I can image incentives like health/survival/independence in case of war or other cataclysm. But this is pretty drastic, nothing else comes to mind though

[petesergeant]

Glory and altruism

[WithinReason]

People only care about those because it brings them more resources.

People seek glory for power. Altruism is not a stable strategy so will be exploited.

[petesergeant]

Trivially disproved by self-sacrifice in the persual of both

[WithinReason]

self-sacrifice often brings resources to your kin, and is also easily exploitable