Akka
Moody old mage.
The GDP per capita just indicate how much money the median person adds to the country's economy. Even with adjusted for PPP, it doesn't give any information on much money a person need, rather how much purchasing power she has.I don't think it does. And you're right of course. If you want to look at the total "disposable income + public services" the average person receives, just look at the GDP per capita (adjusted for PPP). The problem is that it can be highly unequal, which is why I posted that chart on the distribution of disposable income.
That's the problem with such comparative statistics : they are ultimately very limited when it comes to adress "quality of life", because it depends on a lot of hidden factors/costs.
A simple example like the cost of higher education (which seems so high in the USA that it cripples lots of people for decades after they finish their studies, while it is mostly free in many EU countries) is completely hidden from most statistic, while having a tremendous effect in practice.
Other obvious example are the ubiquitous healthcare system (and social safety net in general), subsidized transportation, regulations on food quality, consumer rights protection, etc.
These are very difficult to measure, but have a large impact on what you can afford and how financially free you are in practice, and the quality of life in general.