Agreed, if you want some idea of quality of life, GDP probably isn't the best.
If you want to measure who has the most resources either to potentially trade with them, or decide if you have the resources to fight them, GDP becomes more useful.
If you want to measure who has the most resources either to potentially trade with them, or decide if you have the resources to fight them, GDP becomes more useful.
The only thing one can agree from this article is that some countries are expected to grow at a higher rate than others only due to a larger population. I think this only makes sense if everyone is educated and the unemployment rate is low.