I'm saying that there are definitely quite a few people who thought about it at some point in their lives. How often depends on the person. You may just be interest in it and there is nothing wrong about it. What comes in my mind is forensic pathology. These guys are cutting corpses for living. All day. Every day. Does that makes them cold-blooded killers? I hope not. You shouldn't be worried about it too much, unless you want to do it.