Because when you put shoes on you go away (Shoo, Shoo).
Hey,in the 18th century, Henrie Shoeble (French)put bandeges around his feet after a war,they were then covered by leather and he liked them so he wore them all the time,This became the latest trend...
the word for house is "ie", home is "uchi"
They are called 'geta.'
The inventor probobley made the for tennis and other people started using it for something different and now they use them for everything.