Earlier quoted context omitted.
I don't think you understand my point of view and also smokedetector1's with whom I wholeheartedly agree. Economics and money is just numbers. It's not a measure of happiness in life. I just want to have enough money to not worry in life, I don't care about having much more than others. Doing a job I enjoy in a place I enjoy is worth much more to me. Would Elon Musk, the richest guy in the world be happier than me? I…
You can measure happiness with numbers. You can measure anything with numbers. I've welcomed you to provide your favorite happiness metric. But instead you insist that happiness cannot be measured in numbers. Anti-science attitude on display.
To address your point, GDP per capita is not a good metric capturing happiness, for several reasons. Most trivially, because it does nothing to reflect the distribution of wealth. A country could (purely hypothetically ;) ) have massive GDP per capita but the benefits flow mainly to the top.
Even putting that aside, a culture with massive GDP but where the citizens don't have the time, peace, values, and social structures to enjoy life is not a happy society.