What is the point of "rational self-interest"? Everything you do for yourself is lost when you die.
Perhaps it's an observation rather than a precept.
But it needs unpacking - what's the self? What are the drives that count as "happiness"? Are you exercising your freedom by obeying your impulses?
Reminds me of what little I understand of Sartre. Having proved to his satisfaction that man is a futile passion, he then tries to build on the void - you should be brave, honest. Why? When you're gone, you won't be able to applaud yourself or stick any trophies on your ethereal shelf.
The "selfish gene", that I can understand. But that implies that the organism lives for the next generation and for others that share its genes, not itself alone.
We share about half our genes with bananas, I'm told.
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