Well, you guys get it so much colder than we do around here. Single digits in this part of the world is something that happens every 40 or 50 years not every winter.
Much of the problem we're having with this is the "genius engineering" involved in building the house originally. Someone had the great idea that running a T-junction for a sprinkler system off the main pipe from the street close to the house was a great idea. And then, furthermore, adding an outdoor hose bib off that junction... meaning that there are two weak points too close to open air. In this case the weak point that exploded (in part because our water pressure is so damn high) was the outdoor faucet.