German here, only limited experience of staying in the US. But at least here we have the prejudice that Sweden has the best European social system. Best schools, doctors, health care, job security, income. Is that way off from what you think? If it's partially true, and your system is at least as good as Germany's then you need to stay. Only go to the US if you are super rich. Then treatment there is better. In the middle (even upper middle) you are probably way better in Sweden.