[That answer get a smirk. Puck has never been one for intentional murder, not even before the Exile when he was young and stupid, but he's used to, and unbothered by, many of his metaphorical siblings having no such qualms. That Angel admits to it so readily - even if possibly just for shock value or as a way to dismiss the conversation - is amusing to him.]
I would make a comparision to an animal choosing the forest full of traps to hunt, but I imagine there's a certain thrill to that, too.