Shoes in the house is very regional. I live in Colorado and everyone takes off their shoes just inside the door when visiting. The only exception would be like if someone came to deliver a piece of furniture or something where they need foot protection. Maybe it’s more common where it doesn’t ever snow, to leave them on?

Also Canadian, and never understood it - but in thinking, are there any Canadian shows that show the people in their own house without shoes on?

Canadian too, I wear my shoes inside. I don’t have kids, and I don’t roll around on the floor, so why would I care?