I think a large portion of those that join and then leave only joined because they see zoophilia as a kink. No different than someone who likes feet. They come in and soak up all the gooning they can and then when it loses its “newness”, they move on. Maybe they rediscover it as a kink later on and they just do it all over again. They see this as just a place to get their quick fix pleasure till it’s boring to them. The people that have been here for a long time are more than likely actual zoophiles. Where our love and connection to animal partners isn’t some fleeting lust. It’s not something they only think about when horny.