Originally Posted by
Newspaperguy
It makes a lot of sense to do so. It isn't too difficult to heat up a cold house or to put on extra layers of clothing to stay warm, but cooling down a building in a hot climate is more involved.
However at least in the US moving to warmer climates seems to be the case. At least if we are to believe our government.
http://www.census.gov/prod/2/pop/p25/p25-1131.pdf
And if we had a sudden loss of energy warming to keep from freezing might be harder than learning to live with sweaty sheets.