I once had a childhood friend and I remember she was terrified of cows. I always thought that was weird, but she had no problem eating them.
It's not a bad question to pose to vegans. From past experience being vegan can be caused by a whole array of reasons. A lot of times, I find that something traumatic has happened in the past to cause not eating meat.
They are just traumatized animals that don't want to eat other traumatized animals.
