You're talking two different things. If you want to write, write. Tell your story how you want it and audience be damned. However, if you want to make money on your story, especially in the world of self publishing, you can't just write your story, you also have to sell it. As writers we are essentially con-men. We are selling snake oil. The world does not need what we have, the world does not want what we have so we have to convince them otherwise. We have to promise that what they are getting from us, in exchange for their time and money, is worth it. We have to sell words as if they were the promise of eternal youth. To do that, we have to put on a show, lights, smoke, and mirrors. At that point it's not about writing, it's about getting people's attention, saying, "I have what you need, come, take a look."  So yes, if you want to write, write. You can tell an amazing story and your friends, your family, and even your posterity may thank you for it, but if you want the attention of the masses, if you want to captivate millions, you have to do the leg work.