You see Frost, this is an Ouroborous Falacy. There is indeed a point in which being too virtuous will bite you in the ass. Now, if humans were born with a gene to replace the dark magic that would turn them into something like thw LotR orcs, I wouldn't just exile them, I'd flat out exterminate them. Sometimes, a thing is born too evil to save. No amount of coddling or good boy pats will change someone who is born/destined to be a flesh-craving murder big boi. There is no reality in which I see the orcs as the victums. They are no longer civilized. They lost any hope for salvation when dark magic tainted them. Its entirely irresponsible to think you can change something as drastic as dark magic influence with the power of overnight love and cuddles.
Orcs are bad boys. There is no saving orcs. The orc race is bad and needs to be eradicated. Do not sympathize the murderer, as you will only seek to justify his actions.