As @AlViking runs a persistent setting for multiple campaigns spanning (I think) decades of in-world time, would your take be different had Orcs been wiped out by the actions of a previous campaign such that when a player wants to choose Orcs as favoured enemy in this campaign, there aren't any?
'Cause in that instance it wouldn't have been AlViking's decision to not have Orcs in the setting.
Most campaigns are in the same world and play has covered a few centuries at this point. While the lack of orcs wasn't due to character actions but I would be curious as well.