Having lived in super high density for 25+ years, this is really not true. Sounds like you don't have a lot of personal experience with that. Yes, "cars" are no

Having lived in super high density for 25+ years, this is really not true. Sounds like you don't have a lot of personal experience with that. Yes, "cars" are noisy and are a part of the noisescape in dense cities, but it's much worse to deal with public transportation (buses), dogs, people getting back home at night, workouts, remodeling, loud music, airplanes (high density areas often have at least one nearby airport), people fighting, sports celebration etc etc. I live in car-ridden Suburbia now. When my relatives from the dense city visit, they are blown away by the silence. Maybe things are different in Japan, but everything is different in Japan.