Part of the reason for these "surprising" results is probably the individualistic framing of the question. It makes a difference if only you have unnaturally long life, or if you are part of a family or society that is similarly long-lived. For example, the thought of lingering on after friends and family from my generation have died has no appeal to me.
In general, the implication that it's surprising that people didn't want "happiness" and "life expectancy" as the end goals speaks to assumptions of atomization among the creators of the study. Deep down, I think people want meaning and a sense of narrative structure to their lives, not just chasing after pleasures.
>And when people were invited to choose their ideal IQ, the median score was about 130 – a score that would classify someone as smart, but not a genius.
How was the question structured? I have doubts that most people get the statistics of what it means to be 130 IQ vs 150 IQ, etc.