[Roscoe]

Why is "poor" health objectively not in someone's self-interest, or less so than "good" health?

Self-interest always consists of subjective choices, yet they call a philosophy founded on the deification of such choices "Objectivism." A delicious contradiction.

[general_re]

Self-interest always consists of subjective choices...

How could it be otherwise, really? The alternative is that what's right for you is always and everywhere absolutely right for me. I drive fast because I prefer pleasure, you drive slowly because you prefer safety. Clearly, you are irrational for not adopting my preferences as your own.

Or even better, we must strive to live as The Rand has lived, and think as She has thought. Anything different is irrational. So sayeth The Rand.

[spunkets]

The self interest is objective. The particular interests may, or may not be objective. The particular interests can only be considered by themselves, as their is nothing common amongst all possibilities for what might interest someone.