Of course, that's not what "duty" means, so Celebrim's point is well taken.
duty
[doo-tee, dyoo-]
-noun, plural -ties.
1. something that one is expected to do or required to do by moral or legal obligation.
2. the binding or obligatory force of something that is morally or legally right; moral or legal obligation.
3. an action or task required by a person's position or occupation; function: the duties of a clergyman.
4. the respectful and obedient conduct due a parent, superior, elder, etc.
5. an act or expression of respect.
6. a task or chore that a person is expected to perform: It's your duty to do the dishes.
Answering a Summon spell falls under definitions 1, 2, 3, and 6. It is their legal (contractual laws between summoner and called creature) duty, it is their positional duty (demons obey summoning ritual etiquette), it is expected of them (see entry 6), and it is an obligatory force that is directly tied to all demons.
Fighting Devils falls under definitions 6, 3, and 2 for similar reasons.
Vegepygmy said:
I'm not going to bother responding to the rest of your post, except to say it is obvious to me that most of your miscomprehensions stem from an inability to correctly categorize your own ethics and morals. You make the extremely common mistake of attempting to superimpose your own values on the D&D alignment scheme, rather than simply accepting that you are (like myself) not "D&D Good," but more accurately "D&D Neutral."
This is not to say that I am not a good person. Like any Neutral D&D character would, I simply do not believe that the ideals espoused by D&D Good are actually the ones that result in the best possible world. Rather, I believe that acting in one's own self-interest and commitments to others through personal relationships are "gooder" than altruism (as, it seems, do you). Thus, we are not "D&D Good," but more properly "D&D Neutral."
I am an amoral sociopath. I make no mistake in my own alignment (being most definitely CN). However, I do have an exceptionally high (99th percentile) IQ and exceptional reading comprehension.
This adds together so that I have the (apparently) unique ability to read the descriptions in the PHB and apply them to the situation at hand. My own opinions of good and evil in the real world are much, much different than are displayed in the D&D world. When speaking of one, I do not use the other's arguments.
I'd like to point out that I most often play LN or LE characters, as I find them more challenging to play correctly without becoming a detriment to a party's short and longterm goals.
JamesonCourage said:
Regarding an Evil creature performing an Evil act
It is not Evil for the Troll to attack the Orcs. Evil creature's hatred does not end at Good creatures, however. Troll attacking helpless Orcs (entangled, Orcs apparently had no way to kill the Troll) is exploiting a situational weakness which is quite the opposite of the code of honour that applies to Paladins, which makes it, at the very least, Chaotic or Evil (not necessarily both).
Dross said:
(While someone can always find exceptions in these examples) I wonder about all the human/dwarf/gnoll/goblin slaves trapped in such a place being burned. A good being would to me at least think about that, and an evil one wouldn't. (And quoting you out of context somewhat): Would that be an acceptable sacrifice or too much collateral damage (your "greater good")? I do think that for some it would be (better than being a slave to such evil beings), but for others it wouldn't (should not suffer the same fate just because they are forced to be there).
We can safely assume the Drow would have human/elven/dwarf slaves. If burning the city is for the protection of the Good peoples of the world, then it is inherently Good. If it is for resource or personal gain, it is Evil.
If no regard is given to the slave it is a Chaotic act, if some regard (but ultimately decided against) was given to the slave, it would be Lawful.
Dross said:
Let me ask this to see if I understand.
If a Good Drow (which are generally evil) torches an Evil Dwarf (which are generally good) city, is it a Good act?
If "yes": is it because the specifics in this case don't matter, all that matters is that the race has a "usually Evil" alignment so all should be considered such alignment (tarred with the same brush so to speak). So the actions of an "usually evil" race can be always considered "Evil" and a "usually good" race can be always considered good? If so then... well we just have different views.
If "yes" because: It only matters what the perpetrator's alignment is and the alignment the victim's race usually is. Thus a good drow burning a drow city of any alignment would be a Good action (because drow are "usually Evil"), but a good drow burning a dwarf city of any alignment would not be a Good action (because they are "usually Good"). If so then again we just have different views.
If "no": is it because the alignment of those involved matter and the actions of the specific beings matter rather then what a race is known for? For me this implies that you need to figure out the alignment (and/or reasons of said creature's actions) before acting if they have aided you. Which is obviously where I stand.
Post 35 ("It is never Evil to kill any one of the "usually" or "always" Evil beings.") has me leaning towards 1 & 2 (although to me 2 is a possible LN trait)
Or have I just entirely missed your point?
You have a good grasp, but miss some of the nuances.
Good and Evil creatures can perform acts that are against their nature. If a Good creature burns an Evil city, it can be for Evil reasons. If an Evil creature burns an Evil city, it can be for Good reasons.
However, the reasons aren't what really matter. What matters is the consequence.
To take this back to the Troll situation.
Assume a Troll is LG and a party is entirely LG.
If the Troll attacks the party, it is performing an Evil act.
If the party retaliates and kills the Troll, it is an Evil act. We'll call this the "two wrongs don't make a right" theory.
If a Troll of unknown alignment joins combat between a Good party and any other creature, and, during that combat is slain, the Good party is effectively "torching the Evil city with slaves in it". It is for the betterment and protection of a greater number of Good persons than it harms.
To bring this into a real world scenario that might be easier to understand for some, assume a tyrannical dictator holed himself up in a bunker with twelve of his trusted, also tyrannical allies (generals, scientists, or what-have-you), and one benevolent, altruistic scientist who is being held hostage. It is still a Good act to destroy the bunker and thereby everyone in it because it is for the betterment of the greater Good. Killing the good scientist is regrettable, but necessary. It is Chaotic Good to destroy this bunker. It is Lawful Good to send a strike team to extract the good man and kill the evil men with more precision tactics.
Dross said:
It could be argued that it was never evident the troll was there to harm the PCs either (given what we know, it's motives are unknown). I agree that there are lots of trolls who's idea of a good time is doing bad & evil (pretty much describes every troll that my PCs have met), but those are the bad & evil ones. If a troll acted this way to most of my Good to Neutral PC's they would be asking why it acted in that manner and try to find reasons: detect alignment, Knowledge checks, questioning, etc (while a ranger's hated enemy wouldn't get such considerations).
In post #66 I mentioned troll types that are not "usually Evil" but "usually Neutral" and questioned what the alignment of a Steppe Troll is. If this troll happened to one of those Neutral trolls would that modify your view of the actions being a good act?
If the Troll was of a subrace that is usually/always non-Evil/Chaotic, the PC's can assume that it will not be in the best interest of Good to slay that particular Troll.
My question to you is this, if a Red Dragon flew overhead and torched half of your enemies in a combat, landed and proceeded to torch things (other than you), would you attack that Red Dragon?