We've taken to having tunnels. It's easier than having doors, is cooler in the summer, warmer in the winter, and has the added benefit of not needing shoveling out in the winter when it snows.

We are just SO friendly here that no one needs actual doors, we are far to polite to just barge into any room without at least calling, emailing and/or sending gifts beforehand. We have drapes over bathroom entrances just to ensure that our rude bottoms aren't seen by others without warning. (If this does happen by accident, apologizes are given all around, beer is drank to help forget the incident and then a hockey game is watched to wipe the image out of our heads.)

GST is the Good Service Tax and we all gladly pay it so that we get good and friendly service from those installing the tunnels, making sure they're clean and sending out thank you cards to those who use them.

Ottawa has brought forward the idea of slide tunnels, so it's easier and far more enjoyable to travel between areas. It has also been suggested that in the summer, water should pumped into the tunnels for a water-slide type like feature.

It would cost far too much for the US to install tunnels at this point, or to start removing doors. They could adopt a policy of nailing their doors shut so that people will gain a greater appreciation of their homes, and prevent the outside from being messed up. This would save on clean-up costs, and policing costs, and help any pollution problems that may be occurring because of residents being outside.