Mental health is really based on two things.
1. Are you like everyone else? (Or at least like a significantly large group)
2. Can you function okay in the real world?
If you break both then you're definately crazy. If you break one then you're a bit crazy or in a grey area. If you don't break either then you are "sane".
....
When it comes to right/wrong, that depends upon your own particular code of morality. The moral of this story...
Never ask a moral relativist like me to make judgements
....
As a thought, I'm an artist, I can (and occasionally have) drawn fetish work. Some for myself and some for other people (even when I don't share their particular fetish). They're just simulations, graphite on paper, but it makes you wonder.
Would it be wrong if I drew a rape scene for example? Or drew a paedophilia scene from my imagination? If so, why?
What if I took it a step further and programmed a fully realistic virtual reality simulation in which you could commit these things against an imaginary character?
Makes you wonder. (well, makes me wonder).