Always the Furnace. You don't have to:
clear a 3x6 space for the Furnace (after forgetting to the first time)
pay 4000g plus 100s of Wood and Stone for the Furnace
wait 3 days to build the Furnace
buy animal things to fill your Furnace
pet the things every day inside your Furnace
buy Hay for the Furnace things (but not on Mon or Tues when you need it)
build a Silo for the Furnace to save on Hay
harvest Hay for the Furnace things
gather Furnace thing products, feel guilty/useless/a failure if you skip a day
process Furnace thing products, feel guilty/useless/a failure if you skip a day
expand your Furnace to fit different things
expand your Furnace again for even more differenter things
buy another Silo to keep your Furnace things fed all Winter
Instead, you just build a Furnace... and it's done in 5 seconds.
The Furnace loves you back instantly and without all that drama and maintenance. Furnace is warm love.
Furnace