I find peoples attachment to killing goblins or orcs by the score for no reason somewhat weird, not from any great love of goblins or concern for sentient creatures, but for the insistence that it must always forever be goblins, orc and kobolds. After a couple decades at this, seems like you’d be bored of them and their rather well understood habits and be very accepting of their surrender and integration into the general populace, ready to move on to new, heretofore undiscovered, cave and dungeon dwellers.