Weird statement. Don't worry, I wouldn't take your uncertainty about your own feelings personally.
However, I do understand you, and this is something we've struggled with. My wife is a Turk, and at first when we realized "hey, if we sell my house in Mendocino, we can live like princes in Istanbul, or kings on the Aegean", and once that novelty wore off, we decided that we weren't those people.
The argument itself can apply to anywhere. In San Francisco, I spent 10 years living in illegal punk warehouses where I was not a gentrifier, but then I spent 10 years living in Oakland, where I was a gentrifier, even though I'm from California.
Where does the line get drawn? Is it OK to have the $$ to buy a nicer place anywhere in my own country? What about my home state?
We still struggle with this question a lot.
Now what if about 1/3 of that income came from my wife who is from a poorer country than Spain?