Here's one of the problems with D&D alignments as they're commonly understood: evil is usually unrealistic.
Are there things that are objectively evil? Sure, but even those fuzz out in the realm of D&D. Is it evil to kill bandits who attack you? No, though it's good to avoid it if you can. Is it evil to destroy the village that is cutting down local dryad trees for lumber? Also no. It is downright good to kill worshipers of an "evil" god, in many cases, and to kill sentient 'evil' creatures like liches.
To get a morality system where having evil characters in your party makes sense, some things have to be objectively evil. Like slavery, or racism, or apartheid. The big problem is that "killing" is always a thing that's going to sit out there with a big question mark. Many RPGs are based on the idea of killing things, and the real world involves a significant amount of killing people, especially a rough-and-tumble, slightly lawless civilization. It's still grossly exaggerated for games, though: do you know how many people Billy the Kid actually killed? It's generally accepted to be between four and nine. Imagine an RPG in which you kill only nine sentient humanoids the entire game. Ok, I would totally play that, but would most people? (Note: I think you CAN play some of the Thief games this way, if I recall, but most people don't.)
The average soldier in a "good" war may kill a lot more than nine people. But if that guy's still good, is the guy on the other side evil? I mean, we're allowed to kill Germans in WWII games pretty indiscriminately. And why is a guy killing soldiers in a war more morally acceptable than someone who is a part of an oppressed minority that can't actually create an army killing members of the race that's oppressing them? There's that one game where you play as the Irish guy in France fighting the Germans using guerilla tactics (or: terrorism), and he's portrayed as being good.
Most people don't say "Well, I'm going to be evil. Mwhahaha." They just pick a thing to fight for, and sometimes that thing is poorly reasoned, or based on bad cultural assumptions.
To put it another way:
"I believe you find life such a problem because you think there are the good people and the bad people. You're wrong, of course. There are, always and only, the bad people,
but some of them are on opposite sides."
-Havelock Vetinari
Modifié par CulturalGeekGirl, 22 juillet 2011 - 09:22 .