Your picture may be biased by what you see around you, and it seems to make some assumptions such as big trucks and homes being proxies for true affluence (a lot of what you're describing is funded by debt) or that big trucks and homes equals high QoL. I've lived for many years in both the U.S. and Europe, and the things you mention seem very superficial.
The U.S. has barely any public transportation infrastructure, it's ridiculously car-centric, it has enormous inequality, lacks a functional healthcare system (leading to dystopian situations like "medical bankruptcy"), suffers from insidious pollution (PFOAs are an American invention; meanwhile, a lot of drinking water in the U.S. does not meet requirements for safe levels of lead, and the U.S. is still mostly on fossil fuels), and has a deeply dysfunctional political two-party system that constantly threatens democracy.
A lot of people visiting from the U.S. or other countries marvel at my European country's high quality of life. We have great public healthcare, and a significant social safety net for the disadvantaged. We have a great public transportation infrastructure, a surplus of green energy (no coal), and there's generally little need to own a car for many people, nor a car-obsessed culture. We work less and allow more time for family and friends. Everyone gets 5 weeks of paid vacation every year, by law. Sure, we get paid less, but financial wealth isn't everything. Considering healthcare, we (both individuals and the state) spend a lot less than the U.S. I don't have any data on the sizes of apartments, but plenty of people live in big (perhaps not by American standards) detached houses here.