Since AI became a thing, I think the best summary of the whole situation that I've seen is "Why would I bother to read something that no one could be bothered to write?"
I think that most people have the capacity to write better than ChatGPT does, and I would bet money that you yourself could do so if you put in the effort of writing for a while, even if you couldn't right now. I don't think I need to tell you that AI-generated text is often identifiable as such by the kind of cheerful blandness that is left when there is no actual voice.
Besides, to me, having AI create your art for you is like hiring someone to do your birdwatching. Things like birdwatching and writing fetish porn are the kinds of things that your free time is for. I don't understand the urge to skip past the actual act of creating something and improving your skill so you can have a mediocre end-product.
And to your first question, I have tried out ChatGPT, but not with fetish stuff (that's not something I'm comfortable sharing with OpenAI.) My main experience with it is asking it about things that I'm already famiar with to test it, and finding it lacking.
I recommend not using it. In my own life I find that reading and writing on my own helps me to build skills for better writing later a year or even further in the future. It's ok to write slower. Sometimes I need to write slowly, take a few days to think over ideas and get a better grasp of what I'm thinking about and what I'm writing. Really strong writing is built around trying to understand the expected reader beforehand. There's also times when writing a letter where I will read out the lines just to get the words just right before sending it.