Okay, I was thinking about this...
And yes, I could get more cash out of ancient fruit... but having a reliable supply of coffee? I mean, it means I will NEVER run out when mining the Skull Cavern. Like... ever. It means I can suck down a triple espresso for just running around my farm getting chores done, and I can still have extra that adds up, creating a surplus of coffee just laying around waiting to be made into triple espresso (like srsly, I have over 900 coffee in my fridge waiting to be made into triple espresso and 50 triple espresso in a chest waiting for me to get down to under 5 triple espresso in my inventory from drinking what I carry around with me everywhere I go). So, anyway, I like having lots and lots of coffee around, because triple espresso is one of the more expensive things you can cook... and when you get that Qi quest to ship 100k in freshly cooked food, triple espresso makes that real easy.