I’m the OP. I am not that sentimental about being American. However, the US discovered the very rare disease that I have in the early 2000s, and ultimately saved my life (and others) around the world. That is the only reason why I do not renounce my citizenship.

Because of this, I also have complex healthcare needs. So, the US always is a place to fall back on, as it has a lot of doctors treating obscure conditions.