It’s a good question. I would be very interested in the answers. Hope many people respond.
For myself then. Nostalgia plays a part. I lived in Florida in the early 90’s and that explains the nostalgia to a degree, even though it wasn’t the best time of my life, and this is most likely not Florida. It’s how I see American culture as an outsider. The fixation on the flag, the unhealthy fast food culture, an urban environment dominated by large loud advertising. Mostly negatives I must say, from my perspective. Then there is the family and family values. Important positives. I am also left wondering because really I know nothing of the lives of the people I see here. I cannot guess at their politics, education, economic status. Non of those clues come through to me. Does the woman work, what work does the man do? To me they are just quintessential Americans. Mysterious and unknowable.