Lots of people of people have called you out on how much luck you’ve had on not getting majorly sick or anything else that might have stopped you from making money.
But you’re also very privileged, or more accurately are in a position that you can’t expect from everyone, because you were free to move cities for your career. Some people just don’t have that comfort. They rely on family or friends to make them through the day. They might have kids, they might need the mental support, whatever.
Even if they could theoretically make it without the financial, practical, or emotional support, you can’t expect people to give that up just for their career.
I’m from Europe and lived in a country with a much higher pay than my home country. After 2 years I moved back because I just was not happy without being close to my family and friends. I would have been much better off financially if I stayed there, even if just for a few years longer, but it was just not a sacrifice I was willing to make.