The Psychology of Transgender Stories

I went for a long leisurely ride today that stretched to over 2 hours. I've an ebike so there is no justification for saying it was in any sense of the word, "athletic". Along the way part of the time, I mused about why authors write TG stories, real or fiction. There have to be dozens of different motivations. No time was wasted on sussing out the reason for pre-pubescent incidence. Thinking about it now, is it genetic, environmental, resulting from abuse, who can say. Not to criticise, I am sure that some stories lend to wanking off. Questions, questions ....