Here's my advice:
Write what interests you in the moment you want to write. Don't feel like you have to write things that don't interest you. Write what's fun to you, even if it is weird or doesn't really make sense--don't even really need to explain it, unless you find the explanations fun too (like I do).
After I had been writing here for a little while, it felt like some of my readers wanted some very specific things, with activities or tone or characters or whatever. I tried going along with some of those requests, wasn't really happy with the results or how it seemed to contradict what I wanted my characters to be in exchange for something that a handful of people thought would be sexier, but in the end, those are my least-liked chapters usually. Since it wasn't my best work and I didn't put my all into it, it didn't resonate with nearly anybody other than the requestor. In the end, I found that as long as I stuck with my specific interests even if they flew in the face of convention for the kinks I wrote, I found an audience that enjoyed what I was doing anyway.
Overall, it's a free site and most of us are spending our own time to write these chapters, so what you write should be what you want to write, even if it's not perfect and even if it's not what others are asking for that don't align with what you're looking for yourself.