[slothtrop]

Here's one: partaking in a pedo or Lolita fantasy. Doesn't sit right with most people, though that on its own doesn't make it immoral. One could argue that exploration of, say, violent or depraved acts as mere fantasy is apologist, increases risk of partakers trying to up the ante with non-consensual participants to get their rocks off, and is plainly psychologically unhealthy. Fantasizing about what is deemed "evil" is not immoral (we all have fantasized about inflicting violence) but what of habitually doing so to the point where it transforms us? May it be socially considered immoral to genuinely want to commit ill-will even if it isn't performed? Obviously actions are the only "actionable" thing as far as repercussions go, but our thinking changes us perpetually: it is in a sense an action, to choose ourselves. I believe we can choose to be exceptionally deviant, and can choose otherwise, and that the former could have negative consequences both for the self and society. In some capacity, this touches morality...