I don't think most scifi writers realize that most people are unwilling to do violence on a dime, and also that violence gets you nowhere very fast unless you have some very narrow objectives. These aren't stories where being quick to violence is both foible and virtue: they just play it as a virtue because *everyone* wants to do violence, you see, so the quickest draw wins.
I don't think doing mma (and navigating that culture as a trans woman) has necessarily given me the clearest perspective on violence but I do think you have to have a pretty tight give-take relationship with it to start understanding what the different forms of violence are, when/why people use them, what they achieve and what their unforeseen consequences might be