We heat our 2,000 sq ft house with our woodstove-like fireplace (Regency Warmhearth). We have mild winters here (rarely below freezing), but some years we need fires all summer long.
Collecting, cutting, splitting, moving firewood, and starting fires a few times a day is sometimes fun and sometimes tiresome, but at least the splitting counts as exercise.
It works because we like the bedroom cold, and spend most of our time in the living room.
For the past four years or more I've gotten free wood from trees downed during storms.
But for this year, I'm out of wood, and we are running the furnace to keep the house at 64 degrees, and wearing long underwear. It's nice to get up and just have breakfast rather than get up, start the fire, and have breakfast.
I'll have to decide whether to buy wood, since the wood I have now for next year won't last all year.