“But most of all—why on Earth would any human being think that one ought to optimize inclusive genetic fitness, rather than what is good?”
You are asking why anyone would choose life rather than what is good. Inclusive genetic fitness is just the long term form of life, as personal survival is the short-term form.
The answer is, of course, that one should not. By definition, one should always choose what is good. However, while there are times when it is right to give up one’s life for a greater good, they are the exception. Most of the time, life is a subgoal of what is good, so there is no conflict.
“But most of all—why on Earth would any human being think that one ought to optimize inclusive genetic fitness, rather than what is good?”
You are asking why anyone would choose life rather than what is good. Inclusive genetic fitness is just the long term form of life, as personal survival is the short-term form.
The answer is, of course, that one should not. By definition, one should always choose what is good. However, while there are times when it is right to give up one’s life for a greater good, they are the exception. Most of the time, life is a subgoal of what is good, so there is no conflict.