"I'm not a sailor, I live in a city. Don't come at me with this north south crap". It is not only really easy to learn, but it is unbelievably helpful in orientating yourself. To say "go north" is much better than trying to work out lefts and rights. Or when you describe your location as "oh we're west of the city centre" is much better than "oh um you know the Mexican restaurant? Yeah take a left there, if you're facing the restaurant, and then we're that direction.