Given the whole premise of the opening post, and the opening poster's following post, I think it's fairly safe to presume that they're referring to whether or not killing should be watered down in a role-play for the sake of detachment -- no mention of monsters was given in the premise and I believe this is meant to regard humans taking each other's lives, such as the example given of cutting down guards.

My responses were based around that premise and - frankly - the mentality of monsters isn't relevant to answering that point since monsters are by their definition fictitious in nature so there's obviously going to be detachment and escapism written in their portrayal. Monsters can be written well, but they're not going to touch on these psychological matters maturely in a way that's relateable to humans besides perhaps - as stated previously - psychopaths.

On the subject of the challenge involving writing a killing involving a monster, I've actually done this plenty of times before; however, the monsters in my work are far from conventional. If I get some free time (read: not likely at the present time) I'd be willing to write up another.