It's the same reason that games like Pac-Man turned us all into pill popping ghost chasers and Mario made us turtle crushing plumbers? Oh...wait.
That’s when I realized that my moral code in this virtual world was highly situational. When I was safe, clothed, and armed, my instinct was to help the girl that JB shot. When I was naked and alone, I felt no qualms about butchering a guy with a rock if I thought it would help me survive. What did I have to lose? It’s a lot harder to maintain one’s morals when you’re at the bottom of the food chain. I wondered if that rule would also apply if I were to lose everything in real life.