Intuitively, it's hard to believe that witnessing and using violence doesn't have any negative effect on a person, even if in videogames.
I think that rather than asking ourselves "does this have a negative impact?" we should ask "what can I do that has a positive impact?".
Personally, I would never work on a game with significant violence. From my point of view, there are so many other things a human being can contribute towards the well-being and progress of humanity, and I would not feel happy with myself if I limited my contribution and my creativity to making another shooter.
I think that rather than asking ourselves "does this have a negative impact?" we should ask "what can I do that has a positive impact?".
Personally, I would never work on a game with significant violence. From my point of view, there are so many other things a human being can contribute towards the well-being and progress of humanity, and I would not feel happy with myself if I limited my contribution and my creativity to making another shooter.