people do live in Antarctica, but OK, lets compare north America to central Russia instead...
so, you think I should buy winter driving aids when the last time it snowed enough to warrant it was 18 years ago? I wasn't old enough to drive back then, and probably wont have my current car in 5 years time, let alone 18years time. If I lived up in Scotland where it happens almost every year without fail then I would. Down here, what's the point? Its also the same reason why some people celebrate and go mad when it snows, because we rarely see it.
If the tube isn't running how would my sister get to work? There are no car parks for her to use, buses aren't running. The work will still be there tomorrow and in the grand scheme of things it doesn't matter that its not done today.