Think about it thius way then, stronger monsters, or monsters that arnt really wanted for their loot, wouldnt be killed nearly as often, as weaker ones with better loots, This would leave them in the arena for weeks at a time, which is where a habitat may come in need, and the dlayos, which are people not animals, are one thing that would want something to use to an advantage, IE platform, rock ect, of course, its not useful ooc'y until monsters can jump and hide, Ic'ly they can do that but choose not to..