I'm American and also spent a few years living in Europe. I actually much preferred the smaller homes and more walkable cities in Europe, I don't need a McMansion to feel happy.
We moved back primarily because immigration laws are always tricky, our families were still in the US, and I didn't want to watch Russia invade Ukraine from a front row seat. If the decision were only about cost and lifestyle of home and city design we would still be in Europe.