[afterburner]

Canadians don't wear their shoes indoors either. Because of tracking melting snow indoors (so the habit sticks any other time), or the less comfortable shoes due to such weather, and probably because homes in colder climates are heated a little better, so shoes get uncomfortably hot.

But it just makes sense, even in dry summer weather. Or is it blasting AC that makes shoes necessary?

[k-mcgrady]

This was one of the things that took me by surprise in Canada. At home I would do it if someone asked me but in Canada even the cable guy and the construction guy removed their shoes as soon as they entered without being asked. Surprising considering they were also going in and out to their van and had to put the shoes on/off repeatedly.