Originally Posted by patteeu
If dying to save someone's life means more to him than living with the memories of the death of a friend, his interests are served by jumping on that grenade. It's really not rocket science. It just requires you to be able to empathize with people who have values that you might not share.
With all due respect, caring about the friend isn't an option in self interest. The only option is to perform the action due to fear of a negative consequence to yourself such as guilt over inaction.