To be frank I found D&D's alignment system too unrealistically moralistic, the good/evil angle. (Somehow I had this feeling that when New England Puritans turn halfways atheist, that is what results in this Drizzt Do'Urden type strictly moralistic TSR-fantasy.) There is a Hungarian more-or-less-D&D-clone RPG called M.A.G.U.S. (made when TSR rejected the request to allow translating 2nd ed) which kept law/chaos but replaced good/evil with life/death. Having a life alignment means both enjoying life and respecting the lives of others, basically not being a murderer. Having a death alignment both means not respecting the lives of others, and one's own life neither, being something sort of a depressed goth. I found this more plausible because they are more philosophical stances that you could adopt yourself from the inner view, while good/evil is a judgement others cast on you from an outer view. Nobody thinks they are evil, but having a death-alignment is more plausible that someone could adopt it from the inner view, I have seen some fascinating analyses that fascism/nazism had a certain death alignment i.e. it was not merely about murdering others, but seeing a heroic death as the best thing for one's own self too. (Churchills remark: any ideology that glorifies its followers dying runs out of people sooner or later. Warmbodyonomics.) Of course it is an oversimplified system too but it made alignments flesh out better - some evil folks would come accross more as tragic heroes, while unlike in the Puritan TSR-fantasy good heroes would not be self-denying half-monks but people who live with largesse, enjoy fun, sex, etc. (Note to self: get around to reading The Witcher, see if this is less tighter morality is a common characteristic of fantasy written in Central-Eastern Europe or not.)