Logic seldom comes into consideration when PCs need to decide what to do. Or at least in-game logic. Any sort of action can be justified with out-of-character arguments - which is why PCs are so unpredictable.
You can bet when a group of "heroes" are discussing whether to release the orcish women and children, capture them and sell them as slaves, or simply slaughter them, that the argument will be over which course of action gets the characters more gold and experience, not which is the most sensible and morally defensible option within the circumstances of the game setting.
R2-D2: The ship's taking a lot of damage, guys.
Anakin: We must leave.
Palpatine: We need to help Master Obi-Wan.
Anakin: Your safety is paramount, Chancellor. We have no time to lose.
Palpatine: We cannot leave him!
Anakin: He's a Jedi Master. He'll be all right.
Palpatine: I insist; it's immoral to abandon a friend.
R2-D2: So conflicted. You have to stand by fellow PCs... But it's Ben.
Anakin: We don't have time to revive him.
Palpatine: You can carry him; I won't leave without him.
R2-D2: I suppose Palpatine's right.
Obi-Wan: Not necessarily. If saving me risks everyone dying, then it's logical to leave me behind.
R2-D2: Shut up, you don't get a say in this!