so i'm just observing you know. So many of the characters and races are either evil, next to pure evil, or tending to evil. pure good or next to pure good characters are next to non-existent in warcraft. Furthermore, most would be good characters are more accurately described as not evil rather than good.
races do a lot more evil than good - the excuse is usually survival. but there is a hell of a lot more evil in warcraft than good. and in warcraft evil does tend to triumph over good. the only thing is that all of azeroth and it's inhabitants don't get wiped out - which off course they can't or there'll be no story for the game
notice the steady decline of the role of good characters or good races? everyone has to be messed up and it's more a degree of how messed up you are rather than a degree of how good/straight and narrow you are.
i guess the writers feel that good isn't a good thing to promote, but darkness is. and just because you call an ability light, and slap a shining visual on it, doesn't mean there is light in warcraft. it is always subdued, vastly outnumbered and overwhelmed..and when presented, always presented as weak.
e.g. Elune, Malfurion, night elves - they may not always have been so when they were first introduced, but who in Azeroth wants to model their characters after Elune or malfurion or feel proud to be part of the night elf race? good is so lame in warcraft. The so called paladins and holy priests? where is the good they do? they just shout righteous dribble and demons and undead waving a sword, that does not make them good, they carve a lot more destruction than restoration, and off course they often turn out evil - Arthas? Benedictus. - or just plain incompetent - Tyrande -- this is the freaking high priestess you know of the night elves, and she comes off more as a stern faced idiot, or whimpering arm girl, not a righteous and holy woman of valor and courage - and it's not as if there aren't real life examples like Joan of Arc to model her on.
blizzard suck at writing good these days, suc, the theme is totally dark - light and goodness are punch bags that seem to surface only to be squasehed and deprive - and the survives always grim faced that never really shine anything remotely good to pure good, and just a hair throw from evil. Even the supernatural beings of goodness don't get any cover, yet their evil counterparts are very much at the forefront.
alliance good and horde evil is b/s - it's more liek alliance not evil really, and horde not pure evil