The weather here hasn't been bad for winter, but slate gray skies and rain are fairly un-cheerful (especially with Christmas in the past). We had been thinking of heading down to DisneyWorld in February - we have annual passes, so the park entry itself is "free" for us.
But...
It looks like everyone else had the same idea for the same week. There's a period in February when my daughter's school is mostly off (end of the marking period) - and none of the Disney resorts have availability. I guess it wouldn't have been uncrowded...