Also, the medical profession has lost a lot of its prestige here (In Belgium, at least).

From what I heard from colleagues coming from less developed nations, they were more respected in their country of origin than local, established doctors are here.

Due to latent (or sometimes overt) racism, foreign doctor are even less considered, and have thus a harder time earning money.

Even if their net income increases, on a relative scale they lose a lot and happiness is a function of how rich you are relative to your peers.