How Do I Know What I Think Until I See What I Say?

Over at the Bookends blog, Jessica has a post about writers being true to themselves and being proud of what they write. I know people who are embarrassed to write what they write--romances or memoir or YA or whatever--but none of those people are actually published, I suppose because someone who is embarrassed to admit what they write is going to be going out there and seeking publication.* But I guess I'm surprised that it's an issue. I shouldn't be--I was an English major and I'm familiar with the concept of the anxiety of influence**--but the idea that a modern writer would be worried about not being "literary" or not writing a certain genre is...odd to me. I write YA. That's what I do. I don't feel like I should be writing literary fiction, or romance, or mysteries or something.*** And even if I did feel like YA wasn't "worth it" (whatever that means), I don't know that I'd be any good at writing anything else.**** Why