Why do furries turn me on?

It's not a question of whether I'm gay or straight. I have no problems with either and am not comfortable discussing the topic. It's just, I like furries and all but its really starting to bug me and I don't know why. Its tearing me apart because it has been the only thing that turns me on since before I even knew what a furry was, but I know that it is just a fantasy. Furries don't exist and I don't like the idea of obsessing over something that doesn't exist, it just doesn't feel right. Like how Harry Potter fans obsess over wizards. I'm just confused.