Why do people wear shoes inside the house?

Why does this keep coming up? Are there really an appreciable number of people who do this?

For me, I’m fine with whatever guests want to do (unless visibly wet or dirty) since they are temporary and short term. But otherwise I’ve never really had to ask, because it’s so common for taking off your shoes to just be the more comfortable. It’s actually one of my bigger dislikes for going back to the office, that now I have to wear shoes all day and it’s so uncomfortable. I can’t wait to get home and take them off. Isn’t this most people?