I'm finding it difficult to understand why people would want to wear shoes at home and, so vehemently, in other people's homes'.
What kind of shoes do they put on in the morning when they get up? I have different shoes, and I choose them after the activity or occasion. Hiking boots, cycling shoes, smart shoes, etc. So what kind of shoe does the at-home shoe-wearer put on first thing in the morning, or when they're watching TV, for example? Are they the same shoes they'd use for playing football in, ascending Mt Everest, painting the Forth road bridge, or walking the dog?
At what point in the day does the at-home shoe-wearer first put on their shoes? Or do they sleep in them?