There comes a time when dudes perish, through no fault of your own. or maybe you sent them off deliberately on a fool's errand.
Debt of Blood turns the loss of a precious dude into almost as precious stud bullets. Only for the turn, or for the shootout, but that might be enough.
Intentionally you cannot kill your own dude and extract the benefits of Debts.
since the noon effect will last until the end of the turn, it does require a dude to go to Boot Hill. Wounded / Discarded is not enough. This may create a situation where you send a sacrificial warrior into a fight and TRY to get a bad hand. Weird times in the weird west. or you just want to salvage something from seeing an unexpected legal five-of-a-kind.