Think about the list of books you made for Reason #2: You Don’t Buy Books. (Pretend you made a list.)
Imagine you had to put all those books back on the shelf at the bookstores you bought them from. (Or, just think about your favourite/most frequented stores.)
Now imagine your next book, all gussied up in a sexy cover, with a jacket blurb that exactly captures the spirit of your story. Where would it be in those bookstores? Would your book be anywhere near the books you bought, or somewhere else?
Would you (or a hypothetical reader just like you) even pick it up?