I'm not actually attracted to animals, and find bestiality to be rather gross (I'm a clean freak). My interest in this type of art is just one step beyond people's interest in anime cat girls and cat boys (humans with cat ears and tails, rather prevalent in Japanese art/anime). Porn is actually a tiny part of my life. My big interest in this art is non-porn related (though the porn is still great). Sex isn't actually a big part of my life, either. This is something I am not worried or concerned about, and thus is not something that interferes with my life. Interestingly, I've found homophobic and prudish people who are so concerned about sexual immorality, that they end up wasting most of their time worrying about it, while those they are worried about just continue on with their lives. Ironic, really, that those who are against it end up the ones who's lives are taken over by it, instead of those being actually involved in it.
I think my point is somewhat shown by you thinking that this is something that is restricting me in any way, or interfering with my life, and spending your time worrying about this stuff and my life. From my point of view, I am completely free to think anything, to logically reason through my decisions, and to personally decide what is important to me and what isn't, while you are the one in a prison where your belief is causing you to waste your time being concerned about rather nonconsequential things that have nothing to do with you, without being able to even ask the question of why exactly things are good, bad, or the way they are.
I will continue to pray for you to start asking simple questions, follow through to more complex questions, and break free of your misguided beliefs (even if you continue to believe), and of your unhealthy sexual repressions. It all starts with not being afraid to ask the right questions.