#0 - May 6, 2011, 4:39 p.m.
Given that not every monster falls under these categories, you're almost always better off investing in a trait that increases your characters overall damage or resistance, for example, which has a more versatile augmentation. I wise player will only invest in these if they have no other available choices. The only reason I can see investing in these traits is if you intend to grind a particular area of the game, consisting of a specific monster classification, in order to item hunt.
I hope when Blizzard is designing traits they minimize these situational traits as much as possible. By adding fluff traits like this you're reducing diversity in character builds since only fools would choose them.