Do I have topics I will not write? Hm.... Explicitly, yes. Am I willing to mention most topics and how I feel about them in my writing, as shown through characters and their emotions? Yeah, I think I can safely say that.
I come from a really open-minded family, where it concerns the blood relatives and adopted ones. This has influenced me quite a bit. I don't care about sexual preferences of any sort because if they're not doing sexual things with me, why should it impact me at all? Race doesn't matter to me, nor do culture or religion.
Pedophiles are slightly different, but my views differ somewhat here from the legal perspective in the US. In the first place, I know there are places where the age of majority is 14. Secondly, there are, for example, celebrity marriages with 20 or more years between their ages, so if the minor is of age to be sexually active anyway (not 7-9, because I see that as the age of experimenting and that would be a gross abuse of authority over a child, but more...14-17, depending on how mature the kid is and if the family isn't trying to push the kid into it), then it seems hypocritical to me to call it pedophilia. If you go by US law, relationships with minors are borderline acceptable even with four years or less between them, unless both are minors. This being the case, why then would it not be pedophilia for anyone to be in a relationship with someone five years or more their junior? My parents are both in relationships with a 10 year age gap. This would make, in the one case, my dad's wife a pedophile. In the other, it would make my mom a pedophile. But they are all consenting adults (however much my dad's wife doesn't act like an adult toward me, which I don't understand as she's 36 years older than I am, but I guess that, just as some people never grow old at heart, some people never grow up in truth) and far be it from me to meddle. Mostly, I suppose I am saying, I think that if a person is mature enough to make adult decisions, mature enough that they could be emancipated, even if they aren't, then I don't see it as pedophilia. (This may also have something to do with my own somewhat precocious maturity, due to my being the older sibling and the way the families raised me. I'm not saying everyone has to see it that way, just that I do.)
Scat play and similar things don't work for me, so I avoid them. I have an overly active imagination and a nose that's gotten rather picky after three sinus infections, in addition to my hereditary ear sensitivity. Nothing against anyone who likes it, I would just rather not read it myself.
Bestiality doesn't bother me. This probably has to do with the fact that I like the animals I meet much more than I like the humans, on average. I don't mind that other people dislike bestiality. I'm sure there are things they like that I don't, too, and that's just a fact of life.
Violence and gore...well, I grew up in a family of hunters, with two male cousins and then my younger twin brothers closest to me in age. I have a much different view of "violence" than most girls I know. I get told that I hit too hard when I'm giving a playful or friendly swat to a shoulder. And, what with the hunting, my usual reaction to guts is, "That smells. Let's get it out of sight soon, so the bears and scavengers don't wander too close."
Do I think there is any content which is allowed here and should not be? No. I think this site is set up in a way that has created a haven for all of us whose needs don't quite fit in with modern society, wherever we live, and that trying to get even one thing banned would alienate those involved and make the rest of us oddballs, misfits and outcasts suddenly start wondering about whether we'd be banned next. It's Adult Fan Fiction for a reason, if not more than one. Minors in general have a bad tendency to flame and otherwise act immature, which makes me glad they're banned from here. Those of us allowed here for the most part mind our manners, keeping in mind that we haven't liked it when we've been banned, flamed, trolled, or spammed on other sites. To my mind, the simple fact that it's a kind of haven tells me, "It's okay to be and share who you are. Those who matter don't mind, and those who mind can just find something else to read. That's what we do here." And part of why it's a haven is this: the mods and admins respond quickly, use the same rules for everyone, and refuse to tolerate the kind of senseless, flamer-ridden arguments that now infest, for example, YouTube.
So, no, I don't think there's anything that should be removed from this site that isn't already. I've never understood why anyone would read something they know they're not going to like anyway, same as I've never understood why people on YouTube go to videos or songs they know they're not going to enjoy, only to complain that the music, the genre, the artist, the person who posted the video, or the viewers as a whole are crap, are pathetic, are-- We all know the list goes on. It's why I'm thankful that such poor behavior is not allowed here. Isn't that kind of haven worth having to avoid the tags you don't like?