Okay, the title is dumb, but let me elaborate.
When it comes to scenes in books or movies, show me a character's family, or part of their family getting killed and you've successfully immobilized me. Like show me THAT scene from Vuk (you'll find it as The Little Fox in Wikipedia) and if you're lucky, I won't be able to function as a human being for an entire day.
I'm talking like, we went to [REDACTED] once while the immobilization effect was chipping my sanity points away. Going there in the first place was my idea, but the moment we arrived I just wanted to go home, lay down, and sleep... for a long time.
I don't know why, but they overstimulate my empathy beyond reasonable measure. I guess my imagination is just too vivid on how horrifying dying, or seeing your loved ones die, must be.
Killing off someone's family members as a plot point, or even a background thing, is something I don't want to be present in any of my settings. If it is present, it will only be in an alternate timeline that was utterly erased, yet its memories manage to leak into the new one.
But it would make my setting seem very trope-y, like a cartoon that has to follow the Hays Code, except here it's enforced by the author himself.
I also don't want to build this into the setting the way I described, because creating a resetting mechanism that can't be abused is a pain.
Sooo... is it okay to put such constraints on my setting and plot? Is there a precedent of decent authors doing that?