I wear shoes at all times, usually just slippers or flip-flops in the house. I don't like the idea of sweaty feet on carpet, and I'd be too lazy to keep taking shoes off for some process like sewing only to have to put them back on to walk across the room. While sewing I'm up and down constantly to iron and trim, and being barefoot would increase the chance of catching a pin in my foot, too.
I have always had cats, and if once in all the years I have ever squooshed into a hair ball, that also would tend to make me dedicated to foot gear forevermore.