So bestiality isn't a disorder if both the woman/man and the dog/cat/frog/whatever are happy? Because something's obviously wrong inside the head of a zoophiliac...
There are necrophiliacs too. :p
I think in such cases the crossover to disorder occurs when the paraphilia escalates from fantasy to reality. The thing about sadomasochism is that it's consensual. Psychologists categorize it in the same way as other paraphilias, but perhaps that needs to change. On the surface, this article seeks to address that issue, but it contains some ambiguous wording that could conceivably serve as a legal loophole.
Are you vanilla (I.e non kinky), Ed?