Europeans are almost as fat as Americans and White Europeans are basically the same as White Europeans in that regard.
I've lived all over both continents and yes, Europeans live in very small flats. Energy is prohibitively expensive.
I enjoy European culture a bit more (both have advantages), but in North America you have the choice generally to live big or small. Not everyone needs a big home (or ranch) but wide open spaces are really nice.
We probably all have an overpopulation problem, but it'd be really, really nice to solve our energy problems, it comes along with fixing climate change and dumping Russians and Saudis from having so much power as we currently are sending them all of our surplus.
And yes, we already 'expansive thinking' in North America, it's why generally we have a bit more material abundance and are a bit wealthier at least by economic measures.