[adrian_b]

The US wages are desirable only for buying the things that have about the same price everywhere (because they are imported from the same Asian countries, with prices passing through US dollars), i.e. mostly electronics and computing devices.

Other products and services, like food, clothes, a home, healthcare, education, or even cars, you can get better than in USA for lower prices, so that the budget for them can be even a lower fraction of a typical local wage, than it is in USA as a fraction of a US wage.

Depending on personal needs and preferences, either USA or another country may be the better choice, but the value of a US wage has a much lower weight in a correct decision than you assume, because a wage must be compared with the expenses. Its absolute value tells very little, because the US dollar appears to be greatly overvalued in comparison with other currencies (which is a consequence of its role in international commerce).