Well, I try not to judge others for their sexual preferences and fetishes. For example, normally I wouldnt judge someone for their foot fetish, or their mom fetish or whatever other fetish they have.
But getting turned on at a girl getting hanged while having an orgasm?
No, at that point, I will judge you.
Keep in mind, that people have died in real life, for having that very same fetish. And they've been found having hanged themselves, with their genitals exposed, all while just indulging their fetish. Sure, some of them might have been suicidal, but others were definitely not, and even talked about what they'll do beforehand, all in the name of achieving a superior orgasm.
So yeah, there's something actually wrong with you, mentally, if you have that extreme fetish.