Americans that wear shoes inside their homes, why?

My mother's bedroom was piled at least 6 inches high with dirty clothes, throughout the entire room. Every inch. That is not even including all the garbage everywhere else. The rest of the house was just as bad, but I cleaned when I could. As a kid, I made a summer goal out of doing all the laundry, which would take weeks of constant loads. When I did the dishes, there was no where to put them away because when she did not have some available to use, she would go out and buy more. She thought the house was dirty, so she called a carpet cleaning service to come clean. They looked at the house and laughed in her face because there was no way to clean with all the garbage around.

I never wore shoes in the house.

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