The wind picked up to the point where it sounded like a chorus of a hundred howling banshees. Even deep in the cave, we all felt the temperature drop even further as the Chill Squall moved through; snatches of wind fingering in as if it was trying to pluck us out of our hole.
Many games draw moral lines in bold colors, where the real world is not so easy to categorize. Suppose that the player characters are faced with an overwhelming foe? Even unsavory allies such as orcish barbarians may be better than no allies at all. More disturbing, these allies may be honestly friendly to the PCs when all is done, overcoming barriers of race and religion. Will the PCs remain friendly with the bloodthirsty humanoid tribesmen when their mutual foes are defeated? Some would expect the tribes to betray them, but after the characters have honestly won their respect, even orcs may not be all bad.