The International Obsession With Cozy -- More Than Just a Fleeting Trend?

What does cozy mean to you? I'm writing this story wrapped in a wool tartan blanket, my big dog at my feet, wearing a fuzzy sweater (hand knitted by a Norwegian, I kid you not). It would be better if the fireplace in the room where I'm writing worked, but late afternoon sunlight is pouring in the window and that's almost as good.