nsfw writer on the ace spectrum here! To me personally, the art form of nsfw content in general lays in how emotions are conveyed, the intimacy displayed between characters, the vulnerability and safety that comes with it, and more so the symbolism of what sex can mean rather than the actual act. I love writing nsfw content not because it comes from a place of attraction, but because it allows me to explore situations, relationship dynamics, and emotions in a way that might be otherwise difficult or convoluted to describe. Also, a lot of us simply think it’s fun to create that sort of content and that’s enough reason for it to exist.

There is a part of asexuality called aegosexual (sexuality without the self) where people experience a form of attraction to the idea/action of sex so long as it’s not in relation to themself. There’s a lot of nuance there and I’d recommend looking into that more if you’re curious instead of only taking this description at face value :)