Jo in Little Women was asked by Professor Bhaer (who Jo eventually married) why she wrote trashy stories. Her answer: The sale of that trashy story bought something for her family back home, the sale of this trashy story paid for a vacation by the sea for her ill sister who needed the fresh air, and so forth and so on.
Professor Bhaer had the decency to feel bad for bringing it up to Jo, and after he apologized, he encouraged Jo to write something that is dear to her heart.
I'm not saying that my books are trash. Far from it. I have been wondering lately if there is something that is dear to my heart that I want to write.