Is it normal to be so insanely attracted to violence in hentai?

When I was a younger child, around 13-14 years old, I started watching hentai regularly. It started off pretty innocently, but soon, still in those early days, I started enjoying rape depiction in hentai and porn a lot more. It never bothered me because I thought: Hey, it's just a fantasy, that's alright.

The problem is that in the past years, I've been insanely attracted to anime or hentai that go the extreme mile. It came so far that I can't masturbate or get hard watching anything that doesn't involve very cruel and extreme behavior towards women. From something like extreme torture and rape of two lesbian women, to something like seeing girls getting hacked into pieces while they are screaming, any sort of completely sick way of destroying these fictional anime girls really turns me on, and has lately been the only thing that does.

Now, I do not want to see something like that in real-life, or even fantasy porn with real actors, it just turns me on in anime and hentai. I've also never had the urge to do something like that in real life, I've had normal relationships and was always respectful towards women as well, but anytime I masturbate at home myself I can't help but need the most sick and distasteful treatment of women, where the motto goes: The more pain they get, the more destroyed, raped, abused, and killed they are, the more it gets me hot.

Is that normal? Why do I have such an urge?