I write because I need to write, I need it as much as sex, my drive is that powerful. So I will always write, and find things to write about even if nobody wants to read what I have to say. For the moment I am fortunate that people enjoy reading what I write. But, if they don't, if I lose the ability to write things that interest others, it won't matter. As you say, the sky won't fall in. I used to write poetry and, some 20 years ago, had quite a few poems published under my real name. Then my muse went, presumably never to return. Life goes on!