Well, I personally wouldn't call yourself a sociopath because they're zombies, or turning into one.

I am kinda in the same boat, or at least I fell that I am, where it really wouldn't affect me seeing them. I mean, they're no longer what I consider to be "human."

I think what would disturb me most is if animals become zombies. I know for sure that I wouldn't be able to kill one, especially if it were a cute, little puppy D: