Obviously, the very large majority of them don't do it for the cash. They enjoy causing misfortune and annoyances towards other people. For a lot of abyss pkers, fun means being superior and dominant, and killing runecrafters brings them that fun. Anything goes in the wild. I agree 100% completely with that. That does not change the fact that a large majority of abyss pkers kill runecrafters purely for causing annoyances on the runecrafter's end. Most of the time they don't kill for the cash, so the latter must be the more likely scenario.