Given my family's situations over the last few years, I find myself reactive to anything that smacks of violence or abuse. Including gratuitous violence.

Notwithstanding your valid critique, it is the immersive nature of the experience you are creating that drove me to comment.

Maybe, perhaps, it is the concept that I wouldn't want anyone to feel how I felt. Even if it is just for play and pretend.

Maybe it isn't a "principle" at all.