If writers never wrote beyond their own experiences, Harper Lee never would've written To Kill A Mockingbird, A.A. Milne would've never written Winnie-the-Pooh, and the entire genre of speculative fiction/sci-fi wouldn't exist. I think white authors need to do their homework before they embark on a serious exploration of of a character or reality that isn't familiar to them, but to avoid it entirely? Yeah, that's political correctness gone haywire. And, honestly, isn't 'including' non-white/non-straight characters but 'not telling their story' almost the same thing as NOT INCLUDING THEM IN THE FIRST PLACE?