That isn't rational. I know, as best I can, that no person would ever do something which gives absolutely no benefit to their self.
So, anyone who acts in a way which is not in accordance with your theory must be irrational? There is no possible other rational motivation but the one you define?
"There are more things in heaven and earth, Horatio,
Than are dreamt of in your philosophy."

Anyway, people can care for others due to entertainment value they may have, or perhaps they validate you in the eyes of others, or perhaps they bake they cookies you enjoy.
Plus, there's always actually caring about the other person's well being.
I wasn't saying you're not normal, I think if you consider it honestly, you'll realize you wouldn't sit there and compare how much pleasure you think different options would give you, you'd just decide the person's life is of greater worth.
You value some people more or less than others. Your friends have qualities you like. If you dislike a person, you will probably try to evade them as they burden your life. Given that people are practically limitless in supply, it would benefit your life (negating theoretical "blowback") if they were dead.
Yeah, there are certainly people like that. Yet, strangely, I do not want them to die, because I *gasp* care about them. I wouldn't want them to die even by some natural event, and if my wanting it were erased from my memory, and even if during wanting it, I were protected from any guilt.
In the same sense, would you save the life of a likely murderer? If you were a soldier in WW2, would you shoot Hitler? Or does he have inherent rights due to his inherent value?
This is a different moral question. This is not a question about the possibility of non-selfish acts. But, since you ask, I think I would be absolutely justified in shooting Hitler, as a murderer. Also, I'd judge the lives of those he was killing to be of greater value than his.
Simply by making the choice, it is a selfish act. Apparently, you dislike the thought of another's "horrible death". Thus, sparing them out of pity eases your mind. To let them die may instill regret.
Nope, not really. My thought process would be this: Which do I think is of greater value? Me having a dollar, or some guy I never knew and never will know not dying in horrible agony? Yeah, the guy's more important, it's not even close, the buck barely matters to me at all, I care about the guy's horrible death much more.
This even if you remove all pleasure and pain, and let me know you'll wipe my memory right after the decision. As I say, it's just a value decision, it requires basic comparative ability, not pleasure/pain.
Over life, I've developed a scale of relative value of goods, as I think most people do. I don't have to sit there and think for ten minutes about whether I'd rather have a hamburger or a steak, I know. Same for the person - there's no pleasure/pain about it, a person is more important than a dollar.
I think this is how most people make decisions, and I think most people would also value the person over the dollar.
You're using collective terms when I obviously disagree.
Ok, I guess, I'll give you that. Do you honestly make all your decisions by sitting down and considering the pleasure/pain for yourself inherent in each option?
Everyone lies -- mostly to themselves, which in turn makes them lie to everyone else. Many people believe themselves some mystical race, chosen by God or "Nature", and that they are of exponentially higher value than other animals because they can think in abstracts and communicate with other humans.
Well, I can't jump inside an animal's head, so I can't say for sure what value they have.
I do believe people are more than meat sacks, because they are self aware. Briefly, the attribute of self awareness does not describe the physical state of particles, but rather a mind's perception. Without being a person, you could not say conclusively that the person experiences self awareness or does not -- despite perfect physical knowledge. This implies that self-awareness is not a physical attribute.
For my part, I'd call this non-physical attribute a soul.
If you take religion out of the equation, it's very difficult to justify the sacrificing of an innocent animal for ourselves even though it's entirely unnecessary (actually, I'm interested in arguments if anyone has some).
Right, well, I think this is a different topic, but it is an interesting one. The question, to me, comes down to the minds of animals. Any animal that is truly self aware should not be killed needlessly. If you told me cows and pigs and fish and chicken, etc, were all truly self aware, after finishing being horrified with myself, I'd become a vegetarian.