Shoes
Quicky: many Japanese do most walk properly, I (literally) hear. But I may now know why: they do not wear their shoes properly.
That must be because they are used to wearing easy access sandals and slippers. (You know how they never ever wear shoes in their homes, right?) Putting on shoes properly all of the time is just too much of a hassle, as I have personally found out as well.
Bonus: many folks here wear Crocks-type shoes.