It's tricky - also because it's very hard to aggregate 'happiness'; for economy you can reasonably get the total and just calculate an average, but any 'happine

It's tricky - also because it's very hard to aggregate 'happiness'; for economy you can reasonably get the total and just calculate an average, but any 'happiness' measure inherently has to be bottom-up and then the differences between subpopulations in a single country become critical. Like, someone can compare their well-being at San Francisco versus Paris and see which one is better but that would be a comparison of well-being for them which won't necessarily hold for Parisians and SanFranciscans of a different income level or with different cultural values - while wealth can be compared directly in a mostly objective manner (e.g. adjusting for purchasing parity).