Might be useful to ask a different question: What makes people happy?
It's things like relationships, satisfying work, accomplishment. (and many, many more)
Then the real question emerges: How many of those happiness 'sources' are made better by intelligence? What percentage?
Relationships? Seems like no. Work? Also seems like no, lots of work doesn't make use of a high IQ that people enjoy nonetheless. Accomplishment? Strikes me as most likely of the three, but it's also very relative.
And another thought,
Asking why smart people aren't happier is a bit like asking why people who can jump high aren't more empathetic. There's no direct link between the two, you have to dip out to the material conditions. Like: someone who can jump high is fitter > fitter people are healthier > healthier people have more mental time to be empathetic with > people who can jump high are more empathetic.
For intelligence, we say smart people are happier. Same thing, happiness is not directly correlated. Instead: Smart people are better able to create the outcomes they want > They select outcomes that make them happy > Their environment makes them happy > Smart people are happier.
(These are illustrations of the idea, not actual logical chains or claims.)
It's things like relationships, satisfying work, accomplishment. (and many, many more)
Then the real question emerges: How many of those happiness 'sources' are made better by intelligence? What percentage?
Relationships? Seems like no. Work? Also seems like no, lots of work doesn't make use of a high IQ that people enjoy nonetheless. Accomplishment? Strikes me as most likely of the three, but it's also very relative.
And another thought,
Asking why smart people aren't happier is a bit like asking why people who can jump high aren't more empathetic. There's no direct link between the two, you have to dip out to the material conditions. Like: someone who can jump high is fitter > fitter people are healthier > healthier people have more mental time to be empathetic with > people who can jump high are more empathetic. For intelligence, we say smart people are happier. Same thing, happiness is not directly correlated. Instead: Smart people are better able to create the outcomes they want > They select outcomes that make them happy > Their environment makes them happy > Smart people are happier. (These are illustrations of the idea, not actual logical chains or claims.)