It looks like the immersive realism of virtual reality can actually be harmful and shocking to a person's psyche, especially in first-person shooter games where wanton bloodthirst and violence are mainstays. As a result, VR devs have toned down the death factor quite a bit in order to save audiences from too-real experiences.
"[Death in VR] is more intense, you can look away from it but you can't escape it. You will feel it, like everything in VR, you will feel everything much more intensely," said Guerilla Games dev Piers Jackson. "We made some core decisions early on that we weren't going to kill people," said Guerilla Games' Piers Jackson. "Not having to confront death -- that was something we deliberately chose."
Guerilla Games is developing a multiplayer FPS game called RIGS for the PlayStation VR headset that involves mech-style shooter combat. The devs made a conscience choice to go with robots because the PSVR platform is so immersive it makes FPS violence and havoc feel "too real". And VR isn't like a movie where you can just look away from the screen to escape the gruesome parts--your eyes are glued to the screen for good and ill.