I primarily write as a hobby. It's a nice break from the professional writing I do at work or my own personal writing. Playing in someone else's sandbox is fun and I look at it as a nice writing exercise with characters and a universe I love. I like to write fic tropes and plots that I would never write in my own fiction or that I would never want to see in a movie or in real life. Sometimes creating a fic plot in my head that I might not even write is a great way to get my thoughts away from something that's bothering me (or keep me from falling asleep during a boring commute or meeting).

I haven't written much in the past few years, though, aside from some anon kink meme prompts here and there. I grew tired of how entitled some fans can be when it comes to fandom and fic. I wrote for some pretty popular fandoms and was lucky enough to have some well-received fics. While I understand wanting a new chapter update soon or wanting to read new fic from an author you enjoy, I wrote for fun during my free time. Demanding that I update quicker or getting upset if I went with my own headcanon instead of popular fanon headcanon or sending me a prompt with a tag of "a chaptered or long fic would be great!" - or a prompt that was something I very clearly said I would not write - was exhausting and started making fandom less fun.

TL;DR: I write for me. It's great if other people enjoy my fic, but at the end of the day, I do it for myself. I don't really care how many reviews or kudos my fic receives.