It's not that complicated, people like you and generally NTR lovers are so emotionally and mentally broken that you start to rather feel pain than feel nothing. I'm of course no psychologist but I think this comes pretty close to what it actually is. Maybe childhood trauma / not getting enough love / attention as a young, maybe too many broken relationships that burn out oxytocin receptors, burned one too many times by some cunt. Who knows, triggers could be plentiful but something might trigger it someday and once your brain is wired that way it's too late.
Maybe this is true for some people, but as you know, everyone is not the same.
I like Incest/Sharing-NTS/Netori/Swinging/loli - (loli just a little), these are the main ones in VN/Games.
Films I like, Horror among many others like War for example. Now let's get to real life, what I like or want in my real life!
Incest = NEVER
Sharing-NTS= NEVER (I'm not alpha enough for this and I never will be)
Swinging= NEVER
Loli= No Thanks!
Horror= Are you crazy? Who wants that shit in real life?
War= No no no...
See, I'm the type of person who separates reality from fantasy very well, and I'll never mix these two things unless it's something that doesn't bring severe consequences for me or others, or any bad consequences, and I'm talking about fantasies other than those mentioned (so there's no confusion).
Peace!