Quite right. Violence is the simplest form of human conflict, the one we can most easily adapt to games. Even chess is an abstraction of war strategy.
But personally, I'm much more OK with fairly abstract strategy games than I am with games that shove a gun in your hands and shower you with blood. It's exhausting. I have no problem with those games existing on the market, I'm just so very tired of the fact that nearly every big-budget game centers on shooting people in the face. Or stabbing them.
If nothing else, I've been doing that in videogames for the past 20 years now (since Wolf3d and Doom), and it's getting boring.