Sorry, I just saw your comment.
It's because my life and house are both treated as a workshop, with projects occurring everywhere all the time, and I'm just a fuckin' antisocial little troll thing that grew up in the woods, near a pig farm, playing in an open sewer like a wormy little rat, and now I wear shoes inside, but not all the time - just if I was already wearing them and I'm in my own home and I don't feel like taking them off. And when sounding like "ay," as in "neighbor" and "weigh," and on Christmas and weekends that take place in May.
I also wear them when cleaning the litter boxes, but those stay outside anyway unless there's bad weather. And after "C."