I have never read any of the great Western novels of the past and thought to myself "That was amazing but it would have been so much more relatable if characters of my own ethnicity and my own attractiveness (or rather lack thereof) and my other identity characteristics were there." Not even once. It would be incredibly self-centered and immature to ask an author to cram in a self-insert of me into their world instead of letting them create their world as they envisioned it.