@Rachelover40 - No-one wears shoes indoors, they either have their slippers or just socks.
You obviously suffer from selective reading, given the number of posters on this thread who have said they wear shoes indoors.
Like some others, I was brought up to believe that it was rude to take your shoes off in someone else's house. If someone asked me to, I would but I would think they were rude for asking. Equally, if someone rocked up to my house and removed their shoes, I wouldn't say anything but I would think they were rude as shoes off is very familiar to my mind and unless I know you very well, being that familiar in my house is rude.
Other than kids, nobody outside family has ever taken their shoes off when coming into my house. It's definitely not the norm where I live.
I've been asked to take off my shoes once, ever. It was when I was looking for university accommodation with my son (lodging in someone's house). This particular landlady seemed a bit insane for a multitude of reasons but this just added to the general batshitedness of her set-up.
That said, I do recognise that people are different and that other people have different opinions to me.