>>24398 some people are just hardwired for certain kinks. Sometimes other stuff will be nice or interesting, but with a true fetish, there's little control over the arousal and it never goes away (except maybe after massive brain damage). In fact, going away from it for a while can actually make a fetish stronger, because the brain is desensitized to the images or verbal fetish triggers. That's part of why many people who are ashamed of their fetishes have a kind of binge/purge cycle where they'll avoid it for a while (sometimes even getting rid of physical objects like porn collections) and then starting all over again.

Do I wish something else could get me off as hard? Hell yeah. Scat is messy, unpopular, hard to do "right" in real life, and potentially biohazardous. But it's also been turning my gears since before I even knew my junk was for anything more than peeing with, so at this point I've come to terms with it, mostly.