Why do SOME Americans wear shoes inside their house?

Are they not aware that they wear the same shoes outside also? Aren't they afraid of all the bacteria and dirt their bringing in the house. They even wear shoes on their bed that they sleep on. People spit all over the sidewalk, sometimes dogs take a poop on it. Then people walk all over it and then they wear... show more Are they not aware that they wear the same shoes outside also? Aren't they afraid of all the bacteria and dirt their bringing in the house. They even wear shoes on their bed that they sleep on. People spit all over the sidewalk, sometimes dogs take a poop on it. Then people walk all over it and then they wear the same shoes all over their house?!?! Yuck!
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