> My salary is low for American standards but I can rely on public hospitals, public schools, and public transportation systems. I do not need to save for retirement either. Or for my kids tuition.

I think about this quite a bit, while the median middle class salary is higher in the US, the burden to fund everything out of pocket here is enormous. If salaries are 10-20% higher in the US, much of that goes out the window to fund things like health care, retirement, higher education, daycare/pre-K education, high rents, etc. Things that most Europeans take for granted. All of a sudden that 10-20% gap seems much smaller.

Also keep in mind that not everyone working in tech in the US is making SV level salaries.