"Are you one of those nice vampires?" I asked tentatively.
"No." Replied the vampire. "It's nothing personal, but you're like free-range chickens to us. no, really. We actually steal eggs from fertilization clinics and everything. As I say, it's nothing personal. It's just we're a little bit better than you in our own eyes, so that makes you fair play to eat."
"Well, I suppose that's fair enough. Couldn't you just drink spare blood or something?"
"Well, yes, I suppose. But couldn't you just take vitamins and leave animals alone?"
"They taste good though."
"Yes," he replied. "So do you. Like chicken, in fact."
I was not reassured. Fortunately, he seemed philosophical. I distracted him with a debate on Cartesian Doubt until the sun rose, then I went home.