Game characters don't have goals, ambitions, souls, hearts, the ability to make choices, think for themselves, feel pain, love, hate, everything that makes a human, human. They are target dummies, puppets running on scripts and lines of code, all for the purpose of the game.
Games have rules, guidelines, objectives, challenges, risk, reward, payoff, all of which lead to conflict. War and violence and shooting are some of the greatest forms of, and easiest to portray, conflict. Therefore, the most fulfilling games are violent.
It is impossible to shoot a game character and feel shame regret and sorrow or remorse outside of plot points and narrative. They are not androids or humans, they are puppets, whose strings are pulled by the game developers to help immerse you into their world. The entire ordeal is scripted and fine tuned. You are less shooting people, and more driving a car on a pre set course.
You have not much more choice in games than you do cheering for and living through the main character of a movie, and even the choices you do have are pre assigned and gameplay driven.
Videogames are not violent. Looking at pictures of Syria and Vietnam and Stalingrad and 9/11 do not lose meaning after playing games.
If you were desensitized towards violence you'd become bored with shooters.
They instead train you to become excited by game conflict and simulated violence
That is the way it is. Ignorance is ignorance, so is letting your kneejerk reactions govern, moralize and condemn those who enjoy different forms of media. They are not wrong. They are not sick. They are not freaks, or evil, or violent, or childish or immature. They have done their research and you are running off of ignorance, lies, and self-deceit.
How dare you! Who do you think you are? There is nothing wrong with it more than the addiction and waste of time involved. Any attempt at justifying your feelings towards the aesthetic of said content is merely lying to yourself and others in your attempts to sanctimoniously mentally diverge the truth of the matter in a way that soothes the shock of said violent aesthetic, which disgusts you on an animalistic and misdirected level.
End of discussion.