If they are evil (but reasonable, and know how to speak and realize themselves ...), this gives us the right to kill their children, but children of good races cannot be killed? NSDAP said the same Goblins are people too, they have feelings, intelligence, and so on.
Take a look at what is roasting on the spit in that picture. They are EVIL! The only reason they aren't attacking my character is because they think I am a True Soul. Stop trying to make moral equivalency arguments. Goblins have no morals and they generally kill on sight.
We really need a vegan activist on this thread. Which would prove to us that bulls and other animals in this game are also intelligent, and can talk (after reading a spell, a talk with animals), then they cannot be eaten, and those who eat them are no different from goblins who eat gnomes.