I've read and heard many arguments against female submission, porn, and all sorts of other fantastic, sexy things that fall under that "feminism" or "intelligence" category. Truth be told, what you do inside your own head or bedroom has nothing to do with feminism, intelligence, or anything else that can be classified by other people or society. What YOU do in bed (or in your head) can only affect YOU, and you need to let yourself believe that. Gang bang, rape, snuff, whatever fantasies that you indulge in or live out will never come into light in a way that affects feminism, liberation, or your intelligence... Unless, perhaps, you're unsafe and suffer some sort of injury??
You mentioned "disrespecting yourself," but it sort of begs the question: if you judge yourself and don't allow yourself to be free in fantasy, isn't that just about the biggest disrespect (and anti-feminist, really) that you could serve to yourself?
I'm super new to this, really, but I've been dabbling in it (and begging for it-- haha) for years, and it took me quite a while to come to terms with many (most?) of my fantasies. I have come to realize that I am what I am, and that (just like everything else in life) there are SO many people out there ready to judge me that I should be one of the few who doesn't.
I truly believe that allowing myself to explore this darker side of me has freed me in so many ways-- not just in terms of sexuality. I have plenty of friends who are die-hard feminists, who would think that what I do, what I'm interested in, etc. is just plain WRONG and counter-productive to the whole feminist movement... But, if I'm an intelligent, liberated, feminist woman who supports other women's and my own freedoms, aren't THEY the ones in the "wrong" for judging me and trying to kill my sexual freedom?
Sorry for the ramble, but it's a topic that plagued me and still produces some frustration now... clearly. Haha.
Bottom line is, if there's someone interested in the things you are, who is a GOOD and stable person, that person will respect you whether you have these fantasies or not, and you need to as well
I do!