Well, I can't accuse you of having any unwillingness to bite bullets. Nor of having any unwillingness to do lots of other questionable things with bullets besides.
Still, Less Wrong has got to be the only place where I can ask if it's okay to massacre Indians, and get one person who says it depends what the people living back then thought, and another who says it depends on the sophistication of musketry technology. I don't know if that's a good thing or a bad thing about this site.
I suspect there are a higher-than-average number of bullet-biters here, and I number myself among them. I don't grant the intuitions which lead people to dodge bullets much credence.
Although I am a gun-owner, I don't think I am substantially more likely to shoot anyone (delicious animals are another story) than the others here. Though you may think my above-mentioned criteria (including the government as a source of ass-kicking and taking into account risk aversion) don't count, I'd say that constitutes a substantial unwillingness. Also, while this is peda...
For a long time, I wanted to ask something. I was just thinking about it again when I saw that Alicorn has a post on a similar topic. So I decided to go ahead.
The question is: what is the difference between morally neutral stimulus responces and agony? What features must an animal, machine, program, alien, human fetus, molecule, or anime character have before you will say that if their utility meter is low, it needs to be raised. For example, if you wanted to know if lobsters suffer when they're cooked alive, what exactly are you asking?
On reflection, I'm actually asking two questions: what is a morally significant agent (MSA; is there an established term for this?) whose goals you would want to further; and having determined that, under what conditions would you consider it to be suffering, so that you would?
I think that an MSA would not be defined by one feature. So try to list several features, possibly assigning relative weights to each.
IIRC, I read a study that tried to determine if fish suffer by injecting them with toxins and observing whether their reactions are planned or entirely instinctive. (They found that there's a bit of planning among bony fish, but none among the cartilaginous.) I don't know why they had to actually hurt the fish, especially in a way that didn't leave much room for planning, if all they wanted to know was if the fish can plan. But that was their definition. You might also name introspection, remembering the pain after it's over...
This is the ultimate subjective question, so the only wrong answer is one that is never given. Speak, or be wrong. I will downvote any post you don't make.
BTW, I think the most important defining feature of an MSA is ability to kick people's asses. Very humanizing.