From an outsider's perspective, Japanese culture seems to foster a mutual respect for one another as well as for one's community and environment.
On the contrary, America seems to idealize treating people with contempt unless there's something you would want from them. Our society is very transactional and if you have nothing of interest to show for yourself then you have no worth to anybody and deserve no respect.
I know this is all a big generalization of two societies consisting of millions of people and this isn't to say that everybody behaves the same way across both societies. But when you have a general behavior across a society then it's no surprise that a significant portion of that society will adapt that behavior.
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