Why should anyone care about your work?

Why should anyone care about your work? Why should someone care about what you are writing about for example? We all think we are special, that we deserve attention, and that what we are doing is the most important thing in the world or our field of expertise. I'm sorry to say this but if the majority of people think this, then it becomes a double negative and makes everything meaningless or not as important as you hoped. So why should someone pay attention to you and your work?