It depends on how you see them.
If you see them how they were originally and found in certain fairy tales from previously (little demon monsters spawned from the minds of evil..and truly and unredeemably evil themselves...sort of like other monsters and animals, but these had no sense of good, only a desire to destroy, murder, and cause mayhem...and normally only brought into any sort of order by a very strong leader...) then...maybe.
I mean, If you had a Tiger that was shown to attack and try to kill on site...and it had little kits (oh...so cute), and knowing tendencies of parents passed onto their progeny...would you let the kitties live and let them be around your infant to while it grew (so, by the time it's 2, the Tigers are now full grown and likely to eventually eat your 2 year old)?
Now, add a little more rudimentary intelligence....your answer may be...give it to a Zoo...is that really any better for an Orc...life long torture in a cage..or put it out of it's misery to begin with?
Orcs were NOT seen as much as a racial item as they are today. Orcs were evil and terrible enough, just being somewhat looking like them (A Half-Orc for example, one of the 10% that actually could meld into other societies) were seen as very hated by everyone else in many instances, and Orcs themselves were killed on site in most intelligent society (as were other creatures such as Dark Elves...refer to the early Drizzt books to see why....or Mindflayers, or Demons, or Undead...etc). These were creatures of darkness and as such...acted in accordance with their alignment...but worse in many instances.