In some published game settings, mostly those which are relatively newer, it's been quite popular to say that not all members of the traditionally evil humanoid races are evil. In some cases, a majority are even shown to be quite the opposite. I'm generally of the opinion that such things occur for mostly two reasons. Either the author is desperate to be different, or it's a reflection of Western European apologism.
Be that as it may, I'm curious what the other DMs out there do in their own games. Are all your orcs, goblins and kobolds evil?