 I think one key byproduct of purity culture, as it interacts with other forces like homophobia and fatphobia, could be that it keeps us from making up our own minds about who we are attracted to. It re-inscribes the externalization of fantasy production at the hands of untrustworthy norm of making storytellers. Instead of being able to work out our attractions in any way, we are left with narratives, images, and norms that have been given to us. If we aren't allowed to have any sexual thoughts, much less actions. How are we supposed to discern and decipher our attractions as they take shape?