I had a similar experience while playing Farcry 2. I'd always been aware of the various (unfortunately just) herbivores wandering the plains, and sometimes enjoyed trying to sneak up on the odd deer to get a better look, and marveling at the way they would turn and bound gracefully away.
I was one day driving hastily around a cliff face towards my next mission while some silly animal jumped in front of my car and was unceremoniously knocked dead (I checked the wiki afterwards and it says that just touching the car will kill the poor creatures). I was so shocked at the senselessness of the pain I had suddenly caused when I hurriedly hopped out and ran back to find a deer lying glassy-eyed in the grass. I was dumbstruck with shame for amout 10 seconds before I remembered that it was just a game, and I probably wouldn't be sent to some obscure corner of hell for unintentionally murdering an aleady non-living entity within a videogame.
It was still a pretty awful experience.
I was one day driving hastily around a cliff face towards my next mission while some silly animal jumped in front of my car and was unceremoniously knocked dead (I checked the wiki afterwards and it says that just touching the car will kill the poor creatures). I was so shocked at the senselessness of the pain I had suddenly caused when I hurriedly hopped out and ran back to find a deer lying glassy-eyed in the grass. I was dumbstruck with shame for amout 10 seconds before I remembered that it was just a game, and I probably wouldn't be sent to some obscure corner of hell for unintentionally murdering an aleady non-living entity within a videogame.
It was still a pretty awful experience.