The relevance being this: it might not be your cup of tea, but it certainly is "erotic," and those who choose to engage in such things aren't "psychotic" because they do so. Methinks you're failing to consider the definition of "erotic," friend.
1. arousing or satisfying sexual desire
2. of, pertaining to, or treating of sexual love; amatory
3. subject to or marked by strong sexual desire.
I chose “psychotic” to rhyme with erotic, understanding that it’s exaggerated.